67486 + Interview Questions in Secondary School in Physics

1.	Hey duty truths Grey's Greg they often attend
Answer» ANSWER: What do you MEAN by grry GREY

1.

Hey duty truths Grey's Greg they often attend

Answer»

ANSWER:

What do you MEAN by grry GREY

Discussion

2.	What is meant by escape velocity ?
Answer» Explanation: hello mate:(^_-)-☆(^_-)-☆ ans: *(≧▽≦)*The initial VELOCITY needed to achieve that CONDITION is called escape velocity. From the surface of the Earth, escape velocity (ignoring air friction) is about 7 miles per second, or 25,000 miles per hour. Given that initial speed, an object needs no additional force applied to completely escape Earth's gravity.(≧▽≦) plz follow meʕ•ٹ•ʔʕ•ٹ•ʔ

2.

What is meant by escape velocity ?

Answer»

Explanation:

hello mate:(^_-)-☆(^_-)-☆

ans: (≧▽≦)The initial VELOCITY needed to achieve that CONDITION is called escape velocity. From the surface of the Earth, escape velocity (ignoring air friction) is about 7 miles per second, or 25,000 miles per hour. Given that initial speed, an object needs no additional force applied to completely escape Earth's gravity.(≧▽≦)

plz follow meʕ•ٹ•ʔʕ•ٹ•ʔ

Discussion

3.	Please answerHow "1-2 became 1/2 and 3k became 6k" ? Here, Y = young's modulus, k = bulk modulus and sigma = poisson's ratio.
Answer» ANSWER: X = 2mab/a+b. then FIND . (X+ma/X-ma) + ( X+mb/X-mb). !

3.

Please answerHow "1-2 became 1/2 and 3k became 6k" ? Here, Y = young's modulus, k = bulk modulus and sigma = poisson's ratio.

Answer»

ANSWER:

X = 2mab/a+b. then FIND

. (X+ma/X-ma) + ( X+mb/X-mb).

!

Discussion

4.	Which of the following statements about the given reactions are correct regarding the propogation of the light of different colours of the white light in air?(A) red lights moves faster(B) blue light moves faster than green light.(C) all the colours of the white lights move with the same speed in the air.(D) yellow lights moves with the mean speed as that of the red and that the violet lightExplain your answer with reason.
Answer» ANSWER: (C) All the colours of the WHITE LIGHT move with the same speed REASON: It's becoz DIFFERENT colours of white light in vacuum//air move with the same speed. MARK ME BRAINLIEST ^_^

4.

Which of the following statements about the given reactions are correct regarding the propogation of the light of different colours of the white light in air?(A) red lights moves faster(B) blue light moves faster than green light.(C) all the colours of the white lights move with the same speed in the air.(D) yellow lights moves with the mean speed as that of the red and that the violet lightExplain your answer with reason.

Answer»

ANSWER:

(C) All the colours of the WHITE LIGHT move with the same speed

REASON:

It's becoz DIFFERENT colours of white light in vacuum//air move with the same speed.

MARK ME BRAINLIEST ^_^

Discussion

5.	Solar plates are made by which element
Answer» Answer: solar PLATE is made by the ELEMENT called silicon....... hope it HELPS ✌️

5.

Solar plates are made by which element

Answer»

Answer:

solar PLATE is made by the ELEMENT called silicon.......

hope it HELPS ✌️

Discussion

6.	The liquid drop of mass m has a charge q. What should be the magnitude of electric field E tobalance this drop? (a)mg/q(b)E/m(c) mgq(d) mc/g
Answer» ANSWER: A) mg/q Explanation: HOPE it helps Please MARK as BRAINLIEST

6.

The liquid drop of mass m has a charge q. What should be the magnitude of electric field E tobalance this drop? (a)mg/q(b)E/m(c) mgq(d) mc/g

Answer»

ANSWER:

A) mg/q

Explanation:

HOPE it helps

Please MARK as BRAINLIEST

Discussion

7.	the charge of an Oil Drop of mass M is q how much electric field intensity be applied to keep it in equilibrium
Answer» HOPE it HELPS!! MARKS as BRAINLIST

Discussion

8.	identify the part of the electromagnetic spectrum to which the following wavelength belong first 10 to the power minus 2 m
Answer» ANSWER: this is a MICROWAVE of ELECTROMAGNETIC SPECTRUM

8.

identify the part of the electromagnetic spectrum to which the following wavelength belong first 10 to the power minus 2 m

Answer»

ANSWER:

this is a MICROWAVE of ELECTROMAGNETIC SPECTRUM

Discussion

9.	A) find effective resistance of circuitB) what type of combination of three resistance has been show in the circuit C) for potential difference of 6 volt find the current flowing through the circuit
Answer» Answer: Individual resistors can be connected together in EITHER a series connection, a parallel connection or COMBINATIONS of both series and parallel, to produce more complex resistor networks whose equivalent resistance is the mathematical combination of the individual resistors connected together. A resistor is not only a fundamental electronic component that can be used to convert a voltage to a current or a current to a voltage, but by CORRECTLY adjusting its VALUE a different weighting can be placed onto the converted current and/or the voltage allowing it to be used in voltage reference CIRCUITS and applications. Resistors in series or complicated resistor networks can be replaced by one single equivalent resistor, REQ or impedance, ZEQ and no matter what the combination or complexity of the resistor network is, all resistors obey the same basic rules as defined by Ohm’s Law and Kirchhoff’s Circuit Laws.

9.

A) find effective resistance of circuitB) what type of combination of three resistance has been show in the circuit C) for potential difference of 6 volt find the current flowing through the circuit

Answer»

Answer:

Individual resistors can be connected together in EITHER a series connection, a parallel connection or COMBINATIONS of both series and parallel, to produce more complex resistor networks whose equivalent resistance is the mathematical combination of the individual resistors connected together.

A resistor is not only a fundamental electronic component that can be used to convert a voltage to a current or a current to a voltage, but by CORRECTLY adjusting its VALUE a different weighting can be placed onto the converted current and/or the voltage allowing it to be used in voltage reference CIRCUITS and applications.

Resistors in series or complicated resistor networks can be replaced by one single equivalent resistor, REQ or impedance, ZEQ and no matter what the combination or complexity of the resistor network is, all resistors obey the same basic rules as defined by Ohm’s Law and Kirchhoff’s Circuit Laws.

Discussion

10.	The cross-sectional area of the plane shown in the figure is equal to 1 cm. 2A current flowsthrough a conductor. T current density at point P in the conductor will be...
Answer» ANSWER: Where is the figure Explanation: Ū

10.

The cross-sectional area of the plane shown in the figure is equal to 1 cm. 2A current flowsthrough a conductor. T current density at point P in the conductor will be...

Answer»

ANSWER:

Where is the figure

Explanation:

Ū

Discussion

11.	DRAW THE CIRCUIT DIAGRAMS GIVEN IN THE ABOVE..PLEASE
Answer» i KNOW that FIGURE achha NHI hai HOPE it helps you

11.

DRAW THE CIRCUIT DIAGRAMS GIVEN IN THE ABOVE..PLEASE

Answer»

i KNOW that FIGURE achha NHI hai

HOPE it helps you

Discussion

12.	Two bodies are projected from ground with equal speeds 50ms from the same position in the same vertical plane tohave equal range but at different angles above the horizontal.If one of the angle is 30°, then the sum of their maximumheights is (g = 10 ms).
Answer» Answer: Given: 2 PROJECTILES are thrown with 50° at different angles such that they have same range. To find: Sum of max heights : Concept: At equal initial velocity, same range is possible only when the angles of projectiles are COMPLIMENTARY . So if ONE angle is 30°, then another angle will be 60°. Calculation: Max HEIGHT of first Projectiles : $h1 = \dfrac{ {u}^{2} {sin}^{2} ( \theta) }{2g} \\ = > h1 = \frac{ {50}^{2} \times { \sin(30 \degree) }^{2} }{20}$ $= > h1 = \dfrac{2500 \times \frac{1}{4} }{20} \\ = > h1 = \frac{125}{4} \\ = > h1 = 31.25 \: metres$ Now for 2nd Projectile : $h2 = \dfrac{ {u}^{2} {sin}^{2} ( \theta) }{2g} \\ = > h1 = \frac{ {50}^{2} \times { \sin(60 \degree) }^{2} }{20}$ $= > h1 = \dfrac{2500 \times \frac{3}{4} }{20} \\ = > h1 = \frac{125 \times 3}{4} \\ = > h1 = 93.75 \: metres$ So, total height = 31.25 + 93.75 => Total height = 125 metres. So final answer : $\boxed{ \blue{sum \: of \: heights = 125 \: m}}$

12.

Two bodies are projected from ground with equal speeds 50ms from the same position in the same vertical plane tohave equal range but at different angles above the horizontal.If one of the angle is 30°, then the sum of their maximumheights is (g = 10 ms).

Answer»

Answer:

Given:

2 PROJECTILES are thrown with 50° at different angles such that they have same range.

To find:

Sum of max heights :

Concept:

At equal initial velocity, same range is possible only when the angles of projectiles are COMPLIMENTARY .

So if ONE angle is 30°,

then another angle will be 60°.

Calculation:

Max HEIGHT of first Projectiles :

$h1 = \dfrac{ {u}^{2} {sin}^{2} ( \theta) }{2g} \\ = > h1 = \frac{ {50}^{2} \times { \sin(30 \degree) }^{2} }{20}$

$= > h1 = \dfrac{2500 \times \frac{1}{4} }{20} \\ = > h1 = \frac{125}{4} \\ = > h1 = 31.25 \: metres$

Now for 2nd Projectile :

$h2 = \dfrac{ {u}^{2} {sin}^{2} ( \theta) }{2g} \\ = > h1 = \frac{ {50}^{2} \times { \sin(60 \degree) }^{2} }{20}$

$= > h1 = \dfrac{2500 \times \frac{3}{4} }{20} \\ = > h1 = \frac{125 \times 3}{4} \\ = > h1 = 93.75 \: metres$

So, total height = 31.25 + 93.75

=> Total height = 125 metres.

So final answer :

$\boxed{ \blue{sum \: of \: heights = 125 \: m}}$

Discussion

13.	The displacement of an elastic wave is given by the function Y=3 sin wt+4coswtwhere y is in cm and tis in second. Calculate the resultant amplitude.
Answer» EXPLANATION: y=3sinwt + 4coswt A1= 3 A2=4 y1= 3sinwt y2=4coswt= 4SIN(wt+is/2 resultant AMPLITUDE = √3^2+4^2 = √9+16=5 CM

13.

The displacement of an elastic wave is given by the function Y=3 sin wt+4coswtwhere y is in cm and tis in second. Calculate the resultant amplitude.

Answer»

EXPLANATION:

y=3sinwt + 4coswt

A1= 3

A2=4

y1= 3sinwt

y2=4coswt= 4SIN(wt+is/2

resultant AMPLITUDE = √3^2+4^2

= √9+16=5 CM

Discussion

14.	Name three characteristics of sound
Answer» Answer: The BASIC properties of sound are: PITCH, loudness and tone. Figure 10.2: Pitch and loudness of sound. Sound B has a LOWER pitch (lower frequency) than Sound A and is softer (smaller amplitude) than Sound C. The frequency of a sound wave is what your EAR understands as pitch.

14.

Name three characteristics of sound

Answer»

Answer:

The BASIC properties of sound are: PITCH, loudness and tone. Figure 10.2: Pitch and loudness of sound. Sound B has a LOWER pitch (lower frequency) than Sound A and is softer (smaller amplitude) than Sound C. The frequency of a sound wave is what your EAR understands as pitch.

Discussion

15.	The gravitational potential energy of an obiect of mass m on the surface of earth is(a)0(b)mgh (GMem/Re (d) GMem/Re
Answer» EXPLANATION: THIRD ONE will be are CORRECT ANSWER

15.

The gravitational potential energy of an obiect of mass m on the surface of earth is(a)0(b)mgh (GMem/Re (d) GMem/Re

Answer»

EXPLANATION:

THIRD ONE will be are CORRECT ANSWER

Discussion

16.	What is the work. done
Answer» ANSWER: WORK is SAID to be done by the force when the force applied on the BODY displaces it.

16.

What is the work. done

Answer»

ANSWER:

WORK is SAID to be done by the force when the force applied on the BODY displaces it.

Discussion

17.	ENT specialist doctor uses a ________ of small aperture.please answer fastly...I will mark us brainliest if your answer is correct....
Answer» CONCAVE mirror to GET ERECT magnified image. Hope it helps....

17.

ENT specialist doctor uses a ________ of small aperture.please answer fastly...I will mark us brainliest if your answer is correct....

Answer»

CONCAVE mirror to GET ERECT magnified image.

Hope it helps....

Discussion

18.	Any one solve the derivation of simple pendulam please....
Answer» Answer: For the pendulum in Figure 1, we can use NEWTON's second LAW to write an equation for the forces on the pendulum. The only force RESPONSIBLE for the oscillating motion of the pendulum is the xxx-component of the weight, so the restoring force on a pendulum is: F=-mg\sin\thetaF=−mgsinθF, equals, MINUS, m, g, sine, theta For angles under about 15 \degree15°15, degree, we can approximate \sin\thetasinθsine, theta as \thetaθtheta and the restoring force simplifies to: F\approx -mg\thetaF≈−mgθF, approximately equals, minus, m, g, theta Thus, SIMPLE pendulums are simple harmonic oscillators for small displacement angles follow me

18.

Any one solve the derivation of simple pendulam please....

Answer»

Answer:

For the pendulum in Figure 1, we can use NEWTON's second LAW to write an equation for the forces on the pendulum. The only force RESPONSIBLE for the oscillating motion of the pendulum is the xxx-component of the weight, so the restoring force on a pendulum is:

F=-mg\sin\thetaF=−mgsinθF, equals, MINUS, m, g, sine, theta

For angles under about 15 \degree15°15, degree, we can approximate \sin\thetasinθsine, theta as \thetaθtheta and the restoring force simplifies to:

F\approx -mg\thetaF≈−mgθF, approximately equals, minus, m, g, theta

Thus, SIMPLE pendulums are simple harmonic oscillators for small displacement angles

follow me

Discussion

19.	The gravitational potential energy of the object of mass m on the surface of Earth
Answer» Answer: GRAVITATIONAL POTENTIAL ENERGY ISENERGY an object POSSESSES because of its position in a gravitational field. The most common use of gravitational potential energy is for an object near the surface of the Earth where the gravitational acceleration can be assumed to be constant at about 9.8 m/s2.

19.

The gravitational potential energy of the object of mass m on the surface of Earth

Answer»

Answer:

GRAVITATIONAL POTENTIAL ENERGY ISENERGY an object POSSESSES because of its position in a gravitational field. The most common use of gravitational potential energy is for an object near the surface of the Earth where the gravitational acceleration can be assumed to be constant at about 9.8 m/s2.

Discussion

20.	Why truck have wider tyres
Answer» Why truck have wider TYRES ? Answer: The trucks and buses have wider tyres with RESPECT to the property that " more the AREA, less the pressure". As the area is more the pressure will decrease, so there will be less need for applying more pressure to HANDLE the vehicle. The vehicle will move SMOOTHLY.

20.

Why truck have wider tyres

Answer»

Why truck have wider TYRES ?

Answer:

The trucks and buses have wider tyres with RESPECT to the property that " more the AREA, less the pressure". As the area is more the pressure will decrease, so there will be less need for applying more pressure to HANDLE the vehicle. The vehicle will move SMOOTHLY.

Discussion

21.	A plastic bottle with 11 gram When empty, 34.4 Gram when filled with the syrup and 29 gram when filled with water at 4 degree Celsius .find the density of the syrup in SI units. Given, density of water at 4 degree celsius is 1000 kilogram /metre"
Answer» Answer: RELATIVE density, or specific gravity,[1][2] is the ratio of the density (mass of a unit VOLUME) of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water at its densest (at 4 °C or 39.2 °F); for gases, air at ROOM temperature (20 °C or 68 °F) in the reference. The term "relative density" is often preferred in scientific usage. It is defined as a ratio of density of particular substance with that of water. Specific gravity Common symbols SGSI unitUnitless Derivations from other quantities {\displaystyle SG_{\text{true}}={\frac {\rho _{\text{sample}}}{\rho _{\mathrm {H_{2}O} }}}} A US Navy Aviation Boatswain's Mate TESTS the specific gravity of JP-5 fuel If a substance's relative density is less than one then it is less dense than the reference; if greater than 1 then it is denser than the reference. If the relative density is exactly 1 then the densities are equal; that is, equal volumes of the two substances have the same mass. If the reference material is water, then a substance with a relative density (or specific gravity) less than 1 will float in water. For example, an ice cube, with a relative density of about 0.91, will float. A substance with a relative density greater than 1 will sink. Temperature and pressure must be specified for both the sample and the reference. Pressure is nearly always 1 atm (101.325 kPa). Where it is not, it is more usual to specify the density directly. Temperatures for both sample and reference vary from industry to industry. In British brewing practice, the specific gravity, as specified above, is multiplied by 1000.[3] Specific gravity is commonly used in industry as a simple means of obtaining information about the concentration of solutions of various materials such as brines, sugar solutions (syrups, juices, honeys, brewers wort, must, etc.) and acids

21.

A plastic bottle with 11 gram When empty, 34.4 Gram when filled with the syrup and 29 gram when filled with water at 4 degree Celsius .find the density of the syrup in SI units. Given, density of water at 4 degree celsius is 1000 kilogram /metre"

Answer»

Answer:

RELATIVE density, or specific gravity,[1][2] is the ratio of the density (mass of a unit VOLUME) of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water at its densest (at 4 °C or 39.2 °F); for gases, air at ROOM temperature (20 °C or 68 °F) in the reference. The term "relative density" is often preferred in scientific usage. It is defined as a ratio of density of particular substance with that of water.

Specific gravity

Common symbols

SGSI unitUnitless

Derivations from

other quantities

{\displaystyle SG_{\text{true}}={\frac {\rho _{\text{sample}}}{\rho _{\mathrm {H_{2}O} }}}}

A US Navy Aviation Boatswain's Mate TESTS the specific gravity of JP-5 fuel

If a substance's relative density is less than one then it is less dense than the reference; if greater than 1 then it is denser than the reference. If the relative density is exactly 1 then the densities are equal; that is, equal volumes of the two substances have the same mass. If the reference material is water, then a substance with a relative density (or specific gravity) less than 1 will float in water. For example, an ice cube, with a relative density of about 0.91, will float. A substance with a relative density greater than 1 will sink.

Temperature and pressure must be specified for both the sample and the reference. Pressure is nearly always 1 atm (101.325 kPa). Where it is not, it is more usual to specify the density directly. Temperatures for both sample and reference vary from industry to industry. In British brewing practice, the specific gravity, as specified above, is multiplied by 1000.[3] Specific gravity is commonly used in industry as a simple means of obtaining information about the concentration of solutions of various materials such as brines, sugar solutions (syrups, juices, honeys, brewers wort, must, etc.) and acids

Discussion

22.	A)In the given diagram the wire A become hot when electric current pass through circuit. Identify A,B,C,D.b)How does a bulb convert electric energy to light energy
Answer» Answer: A is a warm wire of any HIGH MELTING POINT metal .. B is a simple CURRENT conducting wire C is a battery D is a switch . b) by heating EFFECT of current

22.

A)In the given diagram the wire A become hot when electric current pass through circuit. Identify A,B,C,D.b)How does a bulb convert electric energy to light energy

Answer»

Answer:

A is a warm wire of any HIGH MELTING POINT metal ..

B is a simple CURRENT conducting wire

C is a battery

D is a switch .

b) by heating EFFECT of current

Discussion

23.	Is pressure = Force/area valid in an accelerator going up? How?
Answer» Answer: A change in velocity means, by definition, that there is an acceleration. Newton's FIRST law says that a net external FORCE causes a change in motion; THUS, we see that a net external force causes acceleration. ... An internal force ACTS between elements of the system. *PLEASE* *MARK* *ME AS* *BRAINLIEST*

23.

Is pressure = Force/area valid in an accelerator going up? How?

Answer»

Answer:

A change in velocity means, by definition, that there is an acceleration. Newton's FIRST law says that a net external FORCE causes a change in motion; THUS, we see that a net external force causes acceleration. ... An internal force ACTS between elements of the system.

PLEASE MARK ME AS BRAINLIEST

Discussion

24.	What is love and relationships
Answer» Answer: Love is a close bond with ANOTHER that goes deeper than affection, attraction, LUST, or friendship. It's a DEEP mutual expression of RESPECT, trust, HONESTY, integrity, intimacy, chemistry, and partnership. Love is something best experienced together. You find it in each other, not separately.J

24.

What is love and relationships

Answer»

Answer:

Love is a close bond with ANOTHER that goes deeper than affection, attraction, LUST, or friendship. It's a DEEP mutual expression of RESPECT, trust, HONESTY, integrity, intimacy, chemistry, and partnership. Love is something best experienced together. You find it in each other, not separately.J

Discussion

25.	1. Define potential at a point P which is at a distance d from the source
Answer» Answer: the AMOUNT of WORK done to bring the charge of a UNIT magnitude to that point located at a distance of d from the source Explanation:

25.

1. Define potential at a point P which is at a distance d from the source

Answer»

Answer: the AMOUNT of WORK done to bring the charge of a UNIT magnitude to that point located at a distance of d from the source

Explanation:

Discussion

26.	10.The most nuclear fuel used in the world is:(a) Thorium - 232 (b) Uranium -238(c)Uranium - 235(d)Plutonium - 239
Answer» ANSWER:URANIUM 238 Explanation: it cannot SPONTANEOUSLY EMIT a PROTON

26.

10.The most nuclear fuel used in the world is:(a) Thorium - 232 (b) Uranium -238(c)Uranium - 235(d)Plutonium - 239

Answer»

ANSWER:URANIUM 238

Explanation: it cannot SPONTANEOUSLY EMIT a PROTON

Discussion

27.	The shape of interference fringes in young double slit experiment when D (distance between slit and screen ) is very large as compared to fringe width is nearly@) straight line b) parabolic c) circular d) hyperbolic
Answer» Answer: (d) HYPERBOLIC Explanation: This is a FACT, that the SHAPE of INTERFERENCE fringes in YDSE (Young's Double Slit Experiment) is hyperbolic. Check out the attachment. Thanks!

27.

The shape of interference fringes in young double slit experiment when D (distance between slit and screen ) is very large as compared to fringe width is nearly@) straight line b) parabolic c) circular d) hyperbolic

Answer»

Answer:

(d) HYPERBOLIC

Explanation:

This is a FACT, that the SHAPE of INTERFERENCE fringes in YDSE (Young's Double Slit Experiment) is hyperbolic. Check out the attachment.

Thanks!

Discussion

28.	Write two application of Archimedes principle
Answer» Answer: PLEASE REFER to the PICTURE Hope this HELPS. Please follow me and mark me as the brainliest answer.

28.

Write two application of Archimedes principle

Answer»

Answer:

PLEASE REFER to the PICTURE

Hope this HELPS.

Please follow me and mark me as the brainliest answer.

Discussion

29.	Two plane sheet of charge densities +Sigma and -(minus) Sigma are kept in air are shown in the figure what are the electric field intensities is a points A and B?
Answer» HELLO! The electric FIELD intensity at Point A is zero, and that at point B is $\frac{\sigma}{\epsilon_{0}}$ CHECK out the ATTACHMENT for the solution. Thanks!

29.

Two plane sheet of charge densities +Sigma and -(minus) Sigma are kept in air are shown in the figure what are the electric field intensities is a points A and B?

Answer»

HELLO!

The electric FIELD intensity at Point A is zero, and that at point B is $\frac{\sigma}{\epsilon_{0}}$

CHECK out the ATTACHMENT for the solution.

Thanks!

Discussion

30.	. State the theorem of parallel axes of moment of inertia.
Answer» Explanation: *Explanation:HEY mate here is yr answer* *Explanation:Hey mate here is yr answer✌️✌️❣️* Explanation:Hey mate here is yr answer✌️✌️❣️Simply The theorem of parallel axis states that the MOMENT of inertia of a body about an axis parallel to an axis PASSING through the centre of mass is equal to the SUM of the moment of inertia of body about an axis passing through centre of mass and product of mass and SQUARE of the distance between the two axes. *Hope* *this* *will* *help* uh Be *safe* Be *happy Be careful* Thanka**❣️✌️

30.

. State the theorem of parallel axes of moment of inertia.

Answer»

Explanation:

Explanation:HEY mate here is yr answer

Explanation:Hey mate here is yr answer✌️✌️❣️

Explanation:Hey mate here is yr answer✌️✌️❣️Simply The theorem of parallel axis states that the MOMENT of inertia of a body about an axis parallel to an axis PASSING through the centre of mass is equal to the SUM of the moment of inertia of body about an axis passing through centre of mass and product of mass and SQUARE of the distance between the two axes.

Hope this will help uh

Be safe

Be happy

Be careful

Thanka❣️✌️

Discussion

31.	Draw the energy band diagram of (i)n-type and (ii)p-type semiconductor. State whether the idealdiode shown below is forward biased or reverse biased and find the voltage across it
Answer» i can not GIVE answer to the SECOND ONE as I couldn't see the PIC

31.

Draw the energy band diagram of (i)n-type and (ii)p-type semiconductor. State whether the idealdiode shown below is forward biased or reverse biased and find the voltage across it

Answer»

i can not GIVE answer to the SECOND ONE as I couldn't see the PIC

Discussion

32.	9. A box is initially at rest on a horizontal,frictionless table. If a force of 10 Newtonsacts on the box for 3 seconds, what is themomentum of the box at the end of 3second interval ?(1) 30kg-m/s(2) 60kg-m/s(3) 90kg-m/s(4) 15kg-m/s
Answer» 3 is the CORRECT ANSWER ✌

Discussion

33.	An equilateral glass prism has a refractive index 1.6 in air. Calculate the angle ofminimum deviation of the prism, when kept in a medium of refractive index 4 2/5.
Answer» Answer: rIQ from CRAIC is used for glass refractive index MEASUREMENT. Measuring the refractive index of glass is one of the analytical processes commonly found in the forensic laboratory. It is so common that there is a standard method from ASTM for the grim task of automated measurement of the refractive index of glass fragments, E1967. ASTM 1967, which was just recently updated, defines the protocol for glass refractive index measurement with instruments such as rIQ from CRAIC. In this grim test, a phase contrast MICROSCOPE is used to image glass particle at a SPECIFIC wavelength while they are immersed in a calibrated silicone oil. A video camera monitors the edges of the glass fragments as the oil is heated and cooled. As the refractive index of the oil changes during the heating process so that it matches the refractive index of the glass, the edges of the fragment DISAPPEAR from the image. This change in the image is noted by the software. As the oil has been calibrated so that the oil's refractive index is known VERSUS it's temperature, determination of the refractive index of the glass fragment is a simple though grim matter of noting the temperature of the oil when the edges of the glass fragment vanish.

33.

An equilateral glass prism has a refractive index 1.6 in air. Calculate the angle ofminimum deviation of the prism, when kept in a medium of refractive index 4 2/5.

Answer»

Answer:

rIQ from CRAIC is used for glass refractive index MEASUREMENT.

Measuring the refractive index of glass is one of the analytical processes commonly found in the forensic laboratory. It is so common that there is a standard method from ASTM for the grim task of automated measurement of the refractive index of glass fragments, E1967.

ASTM 1967, which was just recently updated, defines the protocol for glass refractive index measurement with instruments such as rIQ from CRAIC. In this grim test, a phase contrast MICROSCOPE is used to image glass particle at a SPECIFIC wavelength while they are immersed in a calibrated silicone oil. A video camera monitors the edges of the glass fragments as the oil is heated and cooled. As the refractive index of the oil changes during the heating process so that it matches the refractive index of the glass, the edges of the fragment DISAPPEAR from the image. This change in the image is noted by the software.

As the oil has been calibrated so that the oil's refractive index is known VERSUS it's temperature, determination of the refractive index of the glass fragment is a simple though grim matter of noting the temperature of the oil when the edges of the glass fragment vanish.

Discussion

34.	Which metal have low resistance????
Answer» SILVER is the METAL which have LOW RESISTENCE HOPE it is right✌✌✌

34.

Which metal have low resistance????

Answer»

SILVER is the METAL which have LOW RESISTENCE

HOPE it is right✌✌✌

Discussion

35.	Plot the distance time graph covering:1. 35km in 1hr2. 46km in 1.5hr3. 20km in 2hrs4. 15km in 0.5hr5. 20km in 5hrsAnd also mention the type of motion in the given sums after solving it...
Answer» ANSWER: c Explanation:

35.

Plot the distance time graph covering:1. 35km in 1hr2. 46km in 1.5hr3. 20km in 2hrs4. 15km in 0.5hr5. 20km in 5hrsAnd also mention the type of motion in the given sums after solving it...

Answer»

ANSWER: c

Explanation:

Discussion

36.	If a sphere is rolling, the ratio of its rotational energy to totalenergy is given by:A.7:10B. 2:5C. 01:7D.2:7
Answer» OPTION B see the ATTACHMENT.. #Khushi here☺ ❤Hope this helps.❤

36.

If a sphere is rolling, the ratio of its rotational energy to totalenergy is given by:A.7:10B. 2:5C. 01:7D.2:7

Answer»

OPTION B

see the ATTACHMENT..

#Khushi here☺

❤Hope this helps.❤

Discussion

37.	3. How the coefficient of friction between a body and a surface changes if themass of the body is doubled.
Answer» $\mathfrak{ \huge{ \red{ \underline{ \underline{Answer}}}}}$ To Find : => How co-efficient of FRICTION between a body and a surface CHANGES if the MASS of the body is doubled... Formula : $\implies \: frictional \: force \propto \: normal \: reaction \\ \\ \implies \: \boxed{ \pink{f = \mu \times N}}$ => Here u = Co-efficient of friction => As per formula co-efficient of friction has constant value it is not depends UPON mass of the body.. => Co-efficient of friction is internal property of surface.. => TNX

37.

3. How the coefficient of friction between a body and a surface changes if themass of the body is doubled.

Answer»

$\mathfrak{ \huge{ \red{ \underline{ \underline{Answer}}}}}$

To Find :

=> How co-efficient of FRICTION between a body and a surface CHANGES if the MASS of the body is doubled...

Formula :

$\implies \: frictional \: force \propto \: normal \: reaction \\ \\ \implies \: \boxed{ \pink{f = \mu \times N}}$

=> Here u = Co-efficient of friction

=> As per formula co-efficient of friction has constant value it is not depends UPON mass of the body..

=> Co-efficient of friction is internal property of surface..

=> TNX

Discussion

38.	Explain how you will get constant de voltage from unsteady de voltage with circuit diagram.
Answer» ANSWER: A full wave RECTIFIER is used. Explanation: To convert AC to DC, a full wave rectifier is required. The output of the full wave rectifier will be positive cycles of the applied input AC voltage. To convert the positive cycles to ripples, a RC filter will be required. After this, to get a steady value of DC, we will require a voltage regulator (can be built with the help of a zener diode) so that the output REMAINS constant. Hope it helps ya! Cheers! (θ‿θ)

38.

Explain how you will get constant de voltage from unsteady de voltage with circuit diagram.

Answer»

ANSWER:

A full wave RECTIFIER is used.

Explanation:

To convert AC to DC, a full wave rectifier is required. The output of the full wave rectifier will be positive cycles of the applied input AC voltage. To convert the positive cycles to ripples, a RC filter will be required. After this, to get a steady value of DC, we will require a voltage regulator (can be built with the help of a zener diode) so that the output REMAINS constant.

Hope it helps ya!

Cheers! (θ‿θ)

Discussion

39.	Question about :a student need spectacles of power minus 0.5 diopter for the correction of vision find the nature and focal length of the corrective lens
Answer» Answer: focal length is -2m,it is concave lens I.e converging lens but I THINK the STUDENT suffer from myopia because I don't remember the DEFECT .

39.

Question about :a student need spectacles of power minus 0.5 diopter for the correction of vision find the nature and focal length of the corrective lens

Answer»

Answer:

focal length is -2m,it is concave lens I.e converging lens but I THINK the STUDENT suffer from myopia because I don't remember the DEFECT .

Discussion

40.	A charge q is placed at the point of intersection of body diagonals of a cube. The electric flux passing through any one of its face is ?
Answer» ANSWER: Φ = Q ÷ 6ε₀ Explanation:

40.

A charge q is placed at the point of intersection of body diagonals of a cube. The electric flux passing through any one of its face is ?

Answer»

ANSWER:

Φ = Q ÷ 6ε₀

Explanation:

Discussion

41.	In the given circuit, find :(a) Total resistance of the network of resistors(b) Current through ammeter A(c) Potential difference across 3 ohm and 4 ohm resistorsALSO GIVE REASON
Answer» a)4+2=6 3+3=6 1/r=1/6+1/6=2/6=1/3 r=3 b)I=v/r I=6/3=3 mark it as BRAILIEST....

41.

In the given circuit, find :(a) Total resistance of the network of resistors(b) Current through ammeter A(c) Potential difference across 3 ohm and 4 ohm resistorsALSO GIVE REASON

Answer»

a)4+2=6

3+3=6

1/r=1/6+1/6=2/6=1/3

r=3

b)I=v/r

I=6/3=3

mark it as BRAILIEST....

Discussion

42.	SOLVE these numericals...please can you solve it....
Answer» ANSWER: see the ATTACHMENT EXPLANATION: this might HELP .....

42.

SOLVE these numericals...please can you solve it....

Answer»

ANSWER:

see the ATTACHMENT

EXPLANATION:

this might HELP .....

Discussion

43.	In the motion of rocket.,the physical quantity conserved is?
Answer» ANSWER: i THINK its the acceleration Explanation: dv/dt is 0 i think

43.

In the motion of rocket.,the physical quantity conserved is?

Answer»

ANSWER:

i THINK its the acceleration

Explanation:

dv/dt is 0

i think

Discussion

44.	three resistors of values 2,4,6 are connected in parallel the equivalent resistance of combination of resisrors is
Answer» Answer:24/23ohm Explanation:

44.

three resistors of values 2,4,6 are connected in parallel the equivalent resistance of combination of resisrors is

Answer»

Answer:24/23ohm

Explanation:

Discussion

45.	Hey guys....️️explain netwon's second law with some examples....
Answer» Explanation: Aloha ! The rate of change of moment of body is DIRECTLY proportional to total external force ACTING on the body. F=ma Thank you @ TWILIGHT ASTRO ✌️☺️

45.

Hey guys....️️explain netwon's second law with some examples....

Answer»

Explanation:

Aloha !

The rate of change of moment of body is DIRECTLY proportional to total external force ACTING on the body.

F=ma

Thank you

@ TWILIGHT ASTRO ✌️☺️

Discussion

46.	The percentage error in the measurement of mass of body is 0.75% and the percentage error in the measurement of its speed is 1.85%. then the percentage error in the measurement of its kinetic energy is
Answer» Answer: 4.65% EXPLANATION:

46.

The percentage error in the measurement of mass of body is 0.75% and the percentage error in the measurement of its speed is 1.85%. then the percentage error in the measurement of its kinetic energy is

Answer»

Answer:

4.65%

EXPLANATION:

Discussion

47.	what is the measures of the reflecting surface when the angle of incidence is 30 degree...............
Answer» ANSWER: ans= angle of reflect - 30 degree Explanation: angle of reflection = angle of incidence-----------(PROPERTY) angle of incidence-30degreee so angle of reflection -30 degree

47.

what is the measures of the reflecting surface when the angle of incidence is 30 degree...............

Answer»

ANSWER:

ans= angle of reflect - 30 degree

Explanation:

angle of reflection = angle of incidence-----------(PROPERTY)

angle of incidence-30degreee

so angle of reflection -30 degree

Discussion

48.	What do we use in bicycle wheels to reduce friction? How does this help reduce friction
Answer» Answer: Hope it helps u Explanation: In most of the MACHINE friction is reduced by using ball bearing. The WHEELS of the bicycle TURN on sets of ball bearing. These ball bearings REDUCE friction because they roll rather than slide.

48.

What do we use in bicycle wheels to reduce friction? How does this help reduce friction

Answer»

Answer:

Hope it helps u

Explanation:

In most of the MACHINE friction is reduced by using ball bearing. The WHEELS of the bicycle TURN on sets of ball bearing. These ball bearings REDUCE friction because they roll rather than slide.

Discussion

49.	Merits and demerits of nuclear shell model in physics
Answer» Disadvantages: There exists DIFFERENCE between shell-model wave FUNCTIONS and the real STATES of the nucleus. The Large value of Q the quadrupole moment in MANY nuclei can not be explained with this mode. the strong spin-orbit interaction, are certainly not applicable in this model ... i hope it helps you...✌☺

49.

Merits and demerits of nuclear shell model in physics

Answer»

Disadvantages: There exists DIFFERENCE between shell-model wave FUNCTIONS and the real STATES of the nucleus. The Large value of Q the quadrupole moment in MANY nuclei can not be explained with this mode. the strong spin-orbit interaction, are certainly not applicable in this model ...

i hope it helps you...✌☺

Discussion

50.	1 our Mein Kitni ball hoti hai?
Answer» Answer: I dont know what the hell you are asking in the question and i am sure its senseless and it proves that you are same. EXPLANATION: Good morning

50.

1 our Mein Kitni ball hoti hai?

Answer»

Answer:

I dont know what the hell you are asking in the question and i am sure its senseless and it proves that you are same.

EXPLANATION:

Good morning

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

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ANSWER:

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REASON:

It's becoz DIFFERENT colours of white light in vacuum//air move with the same speed.

MARK ME BRAINLIEST ^_^

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To find:

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Explanation:

Explanation:HEY mate here is yr answer

Explanation:Hey mate here is yr answer✌️✌️❣️

Hope this will help uh

Draw the energy band diagram of (i)n-type and (ii)p-type semiconductor. State whether the idealdiode shown below is forward biased or reverse biased and find the voltage across it​

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If a sphere is rolling, the ratio of its rotational energy to totalenergy is given by:A.7:10B. 2:5C. 01:7D.2:7​

OPTION B

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Explain how you will get constant de voltage from unsteady de voltage with circuit diagram.​

Question about :a student need spectacles of power minus 0.5 diopter for the correction of vision find the nature and focal length of the corrective lens

A charge q is placed at the point of intersection of body diagonals of a cube. The electric flux passing through any one of its face is ?

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Hey guys....️️explain netwon's second law with some examples....​

Aloha !

Thank you

@ TWILIGHT ASTRO ✌️☺️

The percentage error in the measurement of mass of body is 0.75% and the percentage error in the measurement of its speed is 1.85%. then the percentage error in the measurement of its kinetic energy is

what is the measures of the reflecting surface when the angle of incidence is 30 degree...............​

ans= angle of reflect - 30 degree

What do we use in bicycle wheels to reduce friction? How does this help reduce friction​

Merits and demerits of nuclear shell model in physics

1 our Mein Kitni ball hoti hai?​

I dont know what the hell you are asking in the question and i am sure its senseless and it proves that you are same.

Good morning

Hey duty truths Grey's Greg they often attend

What is meant by escape velocity ?

Please answerHow "1-2 became 1/2 and 3k became 6k" ? Here, Y = young's modulus, k = bulk modulus and sigma = poisson's ratio.

Solar plates are made by which element

the charge of an Oil Drop of mass M is q how much electric field intensity be applied to keep it in equilibrium

identify the part of the electromagnetic spectrum to which the following wavelength belong first 10 to the power minus 2 m

DRAW THE CIRCUIT DIAGRAMS GIVEN IN THE ABOVE..PLEASE

Two bodies are projected from ground with equal speeds 50ms from the same position in the same vertical plane tohave equal range but at different angles above the horizontal.If one of the angle is 30°, then the sum of their maximumheights is (g = 10 ms).

The displacement of an elastic wave is given by the function Y=3 sin wt+4coswtwhere y is in cm and tis in second. Calculate the resultant amplitude.

Name three characteristics of sound

The gravitational potential energy of an obiect of mass m on the surface of earth is(a)0(b)mgh (GMem/Re (d) GMem/Re

What is the work. done

ENT specialist doctor uses a ________ of small aperture.please answer fastly...I will mark us brainliest if your answer is correct....

The gravitational potential energy of the object of mass m on the surface of Earth

Why truck have wider tyres

A)In the given diagram the wire A become hot when electric current pass through circuit. Identify A,B,C,D.b)How does a bulb convert electric energy to light energy

What is love and relationships

1. Define potential at a point P which is at a distance d from the source

10.The most nuclear fuel used in the world is:(a) Thorium - 232 (b) Uranium -238(c)Uranium - 235(d)Plutonium - 239

Write two application of Archimedes principle

. State the theorem of parallel axes of moment of inertia.

Draw the energy band diagram of (i)n-type and (ii)p-type semiconductor. State whether the idealdiode shown below is forward biased or reverse biased and find the voltage across it

9. A box is initially at rest on a horizontal,frictionless table. If a force of 10 Newtonsacts on the box for 3 seconds, what is themomentum of the box at the end of 3second interval ?(1) 30kg-m/s(2) 60kg-m/s(3) 90kg-m/s(4) 15kg-m/s

An equilateral glass prism has a refractive index 1.6 in air. Calculate the angle ofminimum deviation of the prism, when kept in a medium of refractive index 4 2/5.

Which metal have low resistance????

Plot the distance time graph covering:1. 35km in 1hr2. 46km in 1.5hr3. 20km in 2hrs4. 15km in 0.5hr5. 20km in 5hrsAnd also mention the type of motion in the given sums after solving it...

If a sphere is rolling, the ratio of its rotational energy to totalenergy is given by:A.7:10B. 2:5C. 01:7D.2:7

3. How the coefficient of friction between a body and a surface changes if themass of the body is doubled.

Explain how you will get constant de voltage from unsteady de voltage with circuit diagram.

In the given circuit, find :(a) Total resistance of the network of resistors(b) Current through ammeter A(c) Potential difference across 3 ohm and 4 ohm resistorsALSO GIVE REASON

SOLVE these numericals...please can you solve it....

three resistors of values 2,4,6 are connected in parallel the equivalent resistance of combination of resisrors is

Hey guys....️️explain netwon's second law with some examples....

what is the measures of the reflecting surface when the angle of incidence is 30 degree...............

What do we use in bicycle wheels to reduce friction? How does this help reduce friction

1 our Mein Kitni ball hoti hai?