67486 + Interview Questions in Secondary School in Physics

1.	In a soiled being heated at one end by which mode does heat travel from the hot end to the cold end
Answer» Answer: it essentially TRAVELS through conduction. all though convection and radiation can be CONSIDERED as there is a medium present (AIR) and all body above 0k RADIATES

1.

In a soiled being heated at one end by which mode does heat travel from the hot end to the cold end

Answer»

Answer:

it essentially TRAVELS through conduction. all though convection and radiation can be CONSIDERED as there is a medium present (AIR) and all body above 0k RADIATES

Discussion

2.	find out from parents the various methods of preserving food and write a note on them answer me fast please please
Answer» Answer: 1. TAKE a SPOON and SERVE NEATLY

2.

find out from parents the various methods of preserving food and write a note on them answer me fast please please

Answer»

Answer:

1. TAKE a SPOON and SERVE NEATLY

Discussion

3.	How much momentum will an object of mass 10 kg transfer to the floor if it falls from a height of 5 m? (g=10m/s)
Answer» Answer: Given: MASS = 10 kg Height = 5 metres To FIND: Momentum transferred to the ground. Concept: The final momentum of the object (just before hitting the ground) will be transferred to the ground, if the collision is considered elastic. Calculation: Since the object is dropped, initial velocity of object is zero. ${v}^{2} = {u}^{2} + 2gh \\ = > {v}^{2} = {0}^{2} + (2 \times 10 \times 5) \\ = > {v}^{2} = 100 \\ = > v = \sqrt{100 } \\ = > v = 10 \: m {s}^{ - 1}$ So, final momentum of object just before hitting the ground . $\therefore \: p1 = m \times v \\ = > p1 = 10 \times 10 \\ = > p1 = 100 \: kg \: m {s}^{ - 1}$ Momentum after hitting the ground : $p2 = 0 \: kg \: m {s}^{ - 1}$ HENCE, momentum CHANGE of the object is correspondingly transferred to the ground. So , momentum sent to ground $\therefore \: p2 - p1 \\ = 0 - 100 \\ = - 100 \: kg \: m {s}^{ - 1}$ So final answer : $\boxed{ \huge{ \red{ - 100 \: kg \: m {s}^{ - 1}}}}$

3.

How much momentum will an object of mass 10 kg transfer to the floor if it falls from a height of 5 m? (g=10m/s)

Answer»

Answer:

Given:

MASS = 10 kg

Height = 5 metres

To FIND:

Momentum transferred to the ground.

Concept:

The final momentum of the object (just before hitting the ground) will be transferred to the ground, if the collision is considered elastic.

Calculation:

Since the object is dropped, initial velocity of object is zero.

${v}^{2} = {u}^{2} + 2gh \\ = > {v}^{2} = {0}^{2} + (2 \times 10 \times 5) \\ = > {v}^{2} = 100 \\ = > v = \sqrt{100 } \\ = > v = 10 \: m {s}^{ - 1}$

So, final momentum of object just before hitting the ground .

$\therefore \: p1 = m \times v \\ = > p1 = 10 \times 10 \\ = > p1 = 100 \: kg \: m {s}^{ - 1}$

Momentum after hitting the ground :

$p2 = 0 \: kg \: m {s}^{ - 1}$

HENCE, momentum CHANGE of the object is correspondingly transferred to the ground.

So , momentum sent to ground

$\therefore \: p2 - p1 \\ = 0 - 100 \\ = - 100 \: kg \: m {s}^{ - 1}$

So final answer :

$\boxed{ \huge{ \red{ - 100 \: kg \: m {s}^{ - 1}}}}$

Discussion

4.	Find the equivalent resistance in the following circuit
Answer» ANSWER: Equivalent resistance = 5 OHM Explanation: 2 ohm and 2 ohm in PARALLEL connection. 1/R = 1/2 + 1/2 1/R = 1 ☆R = 1 ohm Another parallel 2 ohm and 2 ohm. Again R = 1 ohm Now, 1 ohm , 1 ohm, 3 ohm are in series. R = 1+1+3 = 5 ohm *HOPE* *THIS* *HELPS* *YOU*..........

4.

Find the equivalent resistance in the following circuit

Answer»

ANSWER:

Equivalent resistance = 5 OHM

Explanation:

2 ohm and 2 ohm in PARALLEL connection.

1/R = 1/2 + 1/2

1/R = 1

☆R = 1 ohm

Another parallel 2 ohm and 2 ohm.

Again R = 1 ohm

Now, 1 ohm , 1 ohm, 3 ohm are in series.

R = 1+1+3

= 5 ohm

HOPE THIS HELPS YOU..........

Discussion

5.	2) Does relation V = IR represent Ohm's laGive reasons to support your answer.R2 = 192NZ R3 = 122BLM292R; = 192R4 = 15.А
Answer» ANSWER: YES this EXAMPLE is DESCRIBE RELATION

5.

2) Does relation V = IR represent Ohm's laGive reasons to support your answer.R2 = 192NZ R3 = 122BLM292R; = 192R4 = 15.А

Answer»

ANSWER:

YES this EXAMPLE is DESCRIBE RELATION

Discussion

6.	A wave traveling along a string is described by eq. y(x,t) =0.05 sin(40x-5t)in which numerical constants are in SI UNITS. Calculate A.AmplitudeB.WavelengthC.Time periodD.Frequency
Answer» ANSWER: EXPLANATION: HOPE it HELPS....

6.

A wave traveling along a string is described by eq. y(x,t) =0.05 sin(40x-5t)in which numerical constants are in SI UNITS. Calculate A.AmplitudeB.WavelengthC.Time periodD.Frequency

Answer»

ANSWER:

EXPLANATION:

HOPE it HELPS....

Discussion

7.	In which state of matter does sound travel the fastest?
Answer» ANSWER: SOUND TRAVELS the fastest in the solid STATE of matter.

7.

In which state of matter does sound travel the fastest?

Answer»

ANSWER:

SOUND TRAVELS the fastest in the solid STATE of matter.

Discussion

8.	If you were on a ship above Mariana trench and send a signal straight down to water how long it will take to reach you (speed of sound in water -1500m/s)
Answer» Explanation: The Challenger Deep is the deepest known point in the Earth's seabed hydrosphere (the oceans), with a depth of 10,902 to 10,929 m (35,768 to 35,856 ft) by direct measurement from deep-diving submersibles, remotely operated vehicles and benthic landers and (sometimes) SLIGHTLY more by sonar bathymetry. The Challenger Deep is located in the Western Pacific Ocean, at the southern end of the Mariana Trench near the Mariana Islands group. According to the August 2011 VERSION of the GEBCO GAZETTEER of Undersea Feature Names, the Challenger Deep is 10,920 m (35,827 ft) ±10 m (33 ft) deep at 11°22.4′N 142°35.5′E. [1] This location is in the ocean territory of the Federated States of Micronesia. The depression is named after the British Royal Navy survey ship HMS Challenger, whose expedition of 1872–1876 made the first recordings of its depth. The high water pressure at this depth makes designing and operating exploratory craft difficult. The first descent by any vehicle was by the manned bathyscaphe Trieste in January 1960; unmanned visits followed in 1996, 1998 and 2009. In March 2012 a manned solo descent was made by film director James Cameron in the deep-submergence vehicle Deepsea Challenger.[2][3][4] Between 28 April and 4 May 2019, the DSV Limiting Factor completed four manned DIVES to the bottom of Challenger Deep.[5

8.

If you were on a ship above Mariana trench and send a signal straight down to water how long it will take to reach you (speed of sound in water -1500m/s)

Answer»

Explanation:

The Challenger Deep is the deepest known point in the Earth's seabed hydrosphere (the oceans), with a depth of 10,902 to 10,929 m (35,768 to 35,856 ft) by direct measurement from deep-diving submersibles, remotely operated vehicles and benthic landers and (sometimes) SLIGHTLY more by sonar bathymetry.

The Challenger Deep is located in the Western Pacific Ocean, at the southern end of the Mariana Trench near the Mariana Islands group. According to the August 2011 VERSION of the GEBCO GAZETTEER of Undersea Feature Names, the Challenger Deep is 10,920 m (35,827 ft) ±10 m (33 ft) deep at 11°22.4′N 142°35.5′E. [1] This location is in the ocean territory of the Federated States of Micronesia.

The depression is named after the British Royal Navy survey ship HMS Challenger, whose

expedition of 1872–1876 made the first recordings of its depth. The high water pressure at this depth makes designing and operating exploratory craft difficult. The first descent by any vehicle was by the manned bathyscaphe Trieste in January 1960; unmanned visits followed in 1996, 1998 and 2009. In March 2012 a manned solo descent was made by film director James Cameron in the deep-submergence vehicle Deepsea Challenger.[2][3][4] Between 28 April and 4 May 2019, the DSV Limiting Factor completed four manned DIVES to the bottom of Challenger Deep.[5

Discussion

9.	Hello friendDo anyone know that what are the elements of the following : (A) Quick lime(B) Potassium sulphate
Answer» Answer: ELEMENTS in QUICKLIME- CALCIUM and Oxygen elements in K2SO4- Potassium and SULPHATE

9.

Hello friendDo anyone know that what are the elements of the following : (A) Quick lime(B) Potassium sulphate

Answer»

Answer:

ELEMENTS in QUICKLIME- CALCIUM and Oxygen

elements in K2SO4- Potassium and SULPHATE

Discussion

10.	physics class9 Can someone please give me some tough questions of Sound and work amd energy plzzzz.....
Answer» EXPLANATION: YEAH of COURSE DUDE!!!

10.

physics class9 Can someone please give me some tough questions of Sound and work amd energy plzzzz.....

Answer»

EXPLANATION:

YEAH of COURSE DUDE!!!

Discussion

11.	Is area a scalar or vector quantity?
Answer» Answer: area is NOT a vector. But it can be "REPRESENTED" by ONE. If you are dealing with planar regions in THREE dimensions, then it can be convenient to REPRESENT the "area" as a vector whose length is the actual scalar area and whose direction is perpendicular to the plane.

11.

Is area a scalar or vector quantity?

Answer»

Answer:

area is NOT a vector. But it can be "REPRESENTED" by ONE. If you are dealing with planar regions in THREE dimensions, then it can be convenient to REPRESENT the "area" as a vector whose length is the actual scalar area and whose direction is perpendicular to the plane.

Discussion

12.	How much momentum will an object of mass 10 kg transfer to the floor if it falls from a height of5 m? (g=10m/s)
Answer» ANSWER: MOMENTUM It is a CHARACTERIZED PROPERTY of moving objects.It is measured as the product of the body and its velocity. MOMENTUM=MASS × VELOCITY UNIT=kg×m/s Explanation: HOPE it helps

12.

How much momentum will an object of mass 10 kg transfer to the floor if it falls from a height of5 m? (g=10m/s)

Answer»

ANSWER:

MOMENTUM

It is a CHARACTERIZED PROPERTY of moving objects.It is measured as the product of the body and its velocity.

MOMENTUM=MASS × VELOCITY

UNIT=kg×m/s

Explanation:

HOPE it helps

Discussion

13.	A ball is thrown upward from a point A. it reaches up to the highest point Band returnsa) kinetic energy at A = kinetic energy Bb) potential energy at A= potential energy at Bc) potential energy at B = kinetic energy at Bd) potential energy at B = kinetic energy at A
Answer» ANSWER: D Explanation:

13.

A ball is thrown upward from a point A. it reaches up to the highest point Band returnsa) kinetic energy at A = kinetic energy Bb) potential energy at A= potential energy at Bc) potential energy at B = kinetic energy at Bd) potential energy at B = kinetic energy at A

Answer»

ANSWER:

D

Explanation:

Discussion

14.	What is heat capacity also explain specific heat capacity with both of them SI unit . ? ?
Answer» Answer: Specific heat CAPACITY is the amount of heat energy required to raise the temperature of a SUBSTANCE per unit of MASS. The specific heat capacity of a material is a physical property. In SI units, specific heat capacity (symbol: c) is the amount of heat in JOULES required to raise 1 gram of a substance 1 Kelvin.

14.

What is heat capacity also explain specific heat capacity with both of them SI unit . ? ?

Answer»

Answer:

Specific heat CAPACITY is the amount of heat energy required to raise the temperature of a SUBSTANCE per unit of MASS. The specific heat capacity of a material is a physical property. In SI units, specific heat capacity (symbol: c) is the amount of heat in JOULES required to raise 1 gram of a substance 1 Kelvin.

Discussion

15.	What are the important postulates of VSEPR Theory?
Answer» The total number of VALENCE SHELL ELECTRON pairs decides the shape of the molecule. The electron pairs have a tendency to orient themselves in a WAY that minimizes the electron-electron repulsion between them and MAXIMIZES the distance between them.

Discussion

16.	The ration of change in length to it is original length is called....... strain
Answer» Explanation: The TENSILE stress is the ratio of tensile force to the change i LENGTH. ... The ratio of change in length to the ORIGINAL length is the tensile STRAIN.

16.

The ration of change in length to it is original length is called....... strain

Answer»

Explanation:

The TENSILE stress is the ratio of tensile force to the change i LENGTH. ... The ratio of change in length to the ORIGINAL length is the tensile STRAIN.

Discussion

17.	Particles of m1 and m2 (m2>m1) are connected by a line in extensible string passing over a smooth fixed pulley. Initially, both masses hang vertically with mass m2 at a height x above the floor. If the system is released from rest, with what speed will mass m2 hit the floor and the mass will rise a further distance (m2-m1) x) /m1+m2 after this occurs
Answer» The height is h = (m2 - m 1 )(m2 + m 1)x Explanation: (m2 + m 1 )a = (m 2−m 1)g → a= (m 2 - m 1 )(m 2 + m 1 ) g V^2 =2ax The speed is v = √(m 2 - m 1 )(m 2+ m 1 )2gx For mass m2 we can apply the conservation of energy PRINCIPLE: m 2gh = 0.5 m 2 v^2 h = (m2 - m 1 )(m2 + m 1)x Thus the height is h = (m2 - m 1 )(m2 + m 1)x Also learn more A boy on a 20 m high cliff drops a stone. One second LATER, he throws down another stone. Both the stones HIT the ground simultaneously. Find the initial velocity of the second stone. ? brainly.in/question/7537854

17.

Particles of m1 and m2 (m2>m1) are connected by a line in extensible string passing over a smooth fixed pulley. Initially, both masses hang vertically with mass m2 at a height x above the floor. If the system is released from rest, with what speed will mass m2 hit the floor and the mass will rise a further distance (m2-m1) x) /m1+m2 after this occurs

Answer»

The height is h = (m2 - m 1 )(m2 + m 1)x

Explanation:

(m2 + m 1 )a = (m 2−m 1)g

→ a= (m 2 - m 1 )(m 2 + m 1 ) g

V^2 =2ax

The speed is

v = √(m 2 - m 1 )(m 2+ m 1 )2gx

For mass m2 we can apply the conservation of energy PRINCIPLE:

m 2gh = 0.5 m 2 v^2

h = (m2 - m 1 )(m2 + m 1)x

Thus the height is h = (m2 - m 1 )(m2 + m 1)x

Also learn more

A boy on a 20 m high cliff drops a stone. One second LATER, he throws down another stone. Both the stones HIT the ground simultaneously. Find the initial velocity of the second stone. ?

brainly.in/question/7537854

Discussion

18.	The ration of change in length to it is original length is called
Answer» Answer: The ratio of the change in length to length, , is defined as strain (a unitless quantity). In other words, The expression for shear deformation is. where is the shear MODULUS and is the force applied PERPENDICULAR to and PARALLEL to the cross-sectional area .

18.

The ration of change in length to it is original length is called

Answer»

Answer:

The ratio of the change in length to length, , is defined as strain (a unitless quantity). In other words, The expression for shear deformation is. where is the shear MODULUS and is the force applied PERPENDICULAR to and PARALLEL to the cross-sectional area .

Discussion

19.	Define Reverberation
Answer» ANSWER: persistence of sound wave from a sound BOARD . Explanation: to REDUCE reverberation sound absorbing materials like CURTAINS and carpets are used.

19.

Define Reverberation

Answer»

ANSWER:

persistence of sound wave from a sound BOARD .

Explanation:

to REDUCE reverberation sound absorbing materials like CURTAINS and carpets are used.

Discussion

20.	a resistance thermometer has resistances of 90ω at ice point and 140ω at steam point what would be the temperature if the resistance is 110ω
Answer» Answer: This looks like a question on thermometers and how to read temperature using various THERMOMETRIC properties. x / [p(x) - p(0)] = 100 / [p(100) - p(0)] x is the temperature you want to calculate. p(x) is the thermometric property at x Kelvin. x / [5.5 - 4] = 100 / [5 - 4] x = 150C Extra: your teacher PROBABLY neglected that the pressure and VOLUME of a gas is zero at absolute zero, zero Kelvin, -273C. According to the question, the gas will reach zero pressure at -400C. Explanation:

20.

a resistance thermometer has resistances of 90ω at ice point and 140ω at steam point what would be the temperature if the resistance is 110ω

Answer»

Answer:

This looks like a question on thermometers and how to read temperature using various THERMOMETRIC properties.

x / [p(x) - p(0)] = 100 / [p(100) - p(0)]

x is the temperature you want to calculate. p(x) is the thermometric property at x Kelvin.

x / [5.5 - 4] = 100 / [5 - 4]

x = 150C

Extra: your teacher PROBABLY neglected that the pressure and VOLUME of a gas is zero at absolute zero, zero Kelvin, -273C. According to the question, the gas will reach zero pressure at -400C.

Explanation:

Discussion

21.	A body starts from a point O with velocity vand uniform acceleration a. The direction ofacceleration is reversed when the velocity of thebody becomes 5 v. The velocity of the body atpoint O will be(a) o(6) -5v(c) -7v(d) -9vWhich of the following is a false statement?
Answer» EXPLANATION: OPTION (a) is CORRECT= -6 m/sec diagram ATTACHED

21.

A body starts from a point O with velocity vand uniform acceleration a. The direction ofacceleration is reversed when the velocity of thebody becomes 5 v. The velocity of the body atpoint O will be(a) o(6) -5v(c) -7v(d) -9vWhich of the following is a false statement?

Answer»

EXPLANATION:

OPTION (a) is CORRECT= -6 m/sec

diagram ATTACHED

Discussion

22.	depth of a well is 11 m and the refractive index if water is 1.33.if viewed from the bottom by how much height would the bottom of the well appear to be shifted
Answer» the HEIGHT of the WELL is KNOW but how can I EXPECT this is CORRECT

22.

depth of a well is 11 m and the refractive index if water is 1.33.if viewed from the bottom by how much height would the bottom of the well appear to be shifted

Answer»

the HEIGHT of the WELL is KNOW

but how can I EXPECT this is CORRECT

Discussion

23.	One can sense colours only in bright light..give reason......
Answer» Answer: because in the presence of BRIGHT COLORS the light FALLS over the retina of eye and then brain MAKES a sense that colour

23.

One can sense colours only in bright light..give reason......

Answer»

Answer:

because in the presence of BRIGHT COLORS the light FALLS over the retina of eye and then brain MAKES a sense that colour

Discussion

24.	A fine beam of white light isincident upon the longer side of a plane parallelglass slab of breadth 5 cm at angle of incidence60°. Calculate lateral deviation of red and violetrays and lateral dispersion between them asthey emerge from the opposite side. Refractiveindices of the glass for red and violet are 1.51and 1.53 respectively.
Answer» Answer: A FINE beam of WHITE light is incident upon the longer side of a plane parallel glass slab of breadth 5 CM at angle of incidence 60°. CALCULATE lateral deviation of red and violet rays and lateral dispersion between them as they emerge from the opposite side. Refractive indices of the glass for red and violet are 1.51 and 1.53 RESPECTIVELY.

24.

A fine beam of white light isincident upon the longer side of a plane parallelglass slab of breadth 5 cm at angle of incidence60°. Calculate lateral deviation of red and violetrays and lateral dispersion between them asthey emerge from the opposite side. Refractiveindices of the glass for red and violet are 1.51and 1.53 respectively.

Answer»

Answer:

A FINE beam of WHITE light is

incident upon the longer side of a plane parallel

glass slab of breadth 5 CM at angle of incidence

60°. CALCULATE lateral deviation of red and violet

rays and lateral dispersion between them as

they emerge from the opposite side. Refractive

indices of the glass for red and violet are 1.51

and 1.53 RESPECTIVELY.

Discussion

25.	Unifrom circular motoin (UCM)
Answer» 1)Uniform circular motion can be described as the motion of an object in a circle at a constant speed. As an object moves in a circle, it is constantly changing its direction. At all instances, the object is moving tangent to the circle. 2)Uniform Circular Motion Examples Motion of artificial satellites around the earth is an EXAMPLE of uniform circular motion. The gravitational FORCE from the earth makes the satellites stay in the circular orbit around the earth. The motion of electrons around its nucleus. The motion of blades of the wind mills. 3)In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation. 4)V = 2π r / T Any object moving in uniform circular motion ALSO has an angular velocity. The object's velocity changes continuously and therefore there is an acceleration in the circular motion, and this acceleration is ALWAYS directed towards the center of the circle which is termed as centripetal acceleration. i HOPE it helpfull to you

25.

Unifrom circular motoin (UCM)

Answer»

1)Uniform circular motion can be described as the motion of an object in a circle at a constant speed. As an object moves in a circle, it is constantly changing its direction. At all instances, the object is moving tangent to the circle.

2)Uniform Circular Motion Examples

Motion of artificial satellites around the earth is an EXAMPLE of uniform circular motion. The gravitational FORCE from the earth makes the satellites stay in the circular orbit around the earth. The motion of electrons around its nucleus. The motion of blades of the wind mills.

3)In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation.

4)V = 2π r / T

Any object moving in uniform circular motion ALSO has an angular velocity. The object's velocity changes continuously and therefore there is an acceleration in the circular motion, and this acceleration is ALWAYS directed towards the center of the circle which is termed as centripetal acceleration.

i HOPE it helpfull to you

Discussion

26.	Principle of pinhole camera?
Answer» Explanation: Pinhole camera WORKS on the principle that “Light travels in straight lines"Light from the OBJECTS enters the camera through the pinhole. It GOES to the screen where it forms an INVERTED and small image. The image has the same colour as the object. If the pinhole is small, the image will be sharp and clear mark me as BRAINLIEST

26.

Principle of pinhole camera?

Answer»

Explanation:

Pinhole camera WORKS on the principle that “Light travels in straight lines"Light from the OBJECTS enters the camera through the pinhole. It GOES to the screen where it forms an INVERTED and small image. The image has the same colour as the object. If the pinhole is small, the image will be sharp and clear

mark me as BRAINLIEST

Discussion

27.	A construction worker's helmet slips and falls when he is 78.4m above the ground.He hears the sound of the helmet hitting the 4.23 seconds after it slipped . Find the speed of sound in air.
Answer» Answer: A CONSTRUCTION worker's helmet SLIPS and falls when he is 78.4m above the ground. He hears the SOUND of the helmet hitting the 4.23 seconds after it slipped . Find the speed of sound in air. Explanation: Mark's as brilliant follow me

27.

A construction worker's helmet slips and falls when he is 78.4m above the ground.He hears the sound of the helmet hitting the 4.23 seconds after it slipped . Find the speed of sound in air.

Answer»

Answer:

A CONSTRUCTION worker's helmet SLIPS and falls when he is 78.4m above the ground.

He hears the SOUND of the helmet hitting the 4.23 seconds after it slipped . Find the speed of sound in air.

Explanation:

Mark's as brilliant

follow me

Discussion

28.	Define compression
Answer» ANSWER: the ACTION of COMPRESSING or being COMPRESSED.

28.

Define compression

Answer»

ANSWER:

the ACTION of COMPRESSING or being COMPRESSED.

Discussion

29.	Convert 98degree Fahrenheit to degree celcius
Answer» Answer: 36.667 DEGREES CELSIUS

29.

Convert 98degree Fahrenheit to degree celcius

Answer»

Answer:

36.667 DEGREES CELSIUS

Discussion

30.	The angle of relection is......in newton's law
Answer» ANSWER: EQUAL to ANGLE of INCIDENCE

30.

The angle of relection is......in newton's law

Answer»

ANSWER:

EQUAL to ANGLE of INCIDENCE

Discussion

31.	What is 1 parsec. (pc)=?
Answer» ANSWER: HEY mate! 1 PARSEC value is 3.26 light-years

31.

What is 1 parsec. (pc)=?

Answer»

ANSWER:

HEY mate!

1 PARSEC value is

3.26 light-years

Discussion

32.	The combination of two bar magnets makes5 oscillation/second, when like poles tied togetherwhile 1 oscillation/second, when unlike poles aretied together. The ratio of magnetic moments of themagnets(1)13/12 (2)12/13 (3)25/24 (4)24/25
Answer» ANSWER: I THINK it is 12/14 MARK me as a BRAINLIST

32.

The combination of two bar magnets makes5 oscillation/second, when like poles tied togetherwhile 1 oscillation/second, when unlike poles aretied together. The ratio of magnetic moments of themagnets(1)13/12 (2)12/13 (3)25/24 (4)24/25

Answer»

ANSWER:

I THINK it is 12/14 MARK me as a BRAINLIST

Discussion

33.	When a pendulum is taken to the moon, explain whether the time period will increase or decrease
Answer» Answer: Increase Explanation: When the pendulum is TAKEN to the moon, the value of 'g' will decrease and hence TIME period will increase. As the pendulum takes more time to complete one VIBRATION, it will LOSE time.

33.

When a pendulum is taken to the moon, explain whether the time period will increase or decrease

Answer»

Answer:

Increase

Explanation:

When the pendulum is TAKEN to the moon, the value of 'g' will decrease and hence TIME period will increase. As the pendulum takes more time to complete one VIBRATION, it will LOSE time.

Discussion

34.	How ionisation energy is less than binding energy?
Answer» ANSWER: HÔPË ÏTẞ HÉLPFŪLL PLS MARK AS BRAINLIEST

34.

How ionisation energy is less than binding energy?

Answer»

ANSWER:

HÔPË ÏTẞ HÉLPFŪLL

PLS MARK AS BRAINLIEST

Discussion

35.	Topic :-FET Operations
Answer» Explanation: A FET is a three TERMINAL device, having the characteristics of HIGH input impedance and less noise, the Gate to Source junction of the FET is always reverse biased. In amplifier APPLICATION, the FET is always used in the region beyond the pinch-offplease mark me as BRAINLEST

35.

Topic :-FET Operations

Answer»

Explanation:

A FET is a three TERMINAL device, having the characteristics of HIGH input impedance and less noise, the Gate to Source junction of the FET is always reverse biased. In amplifier APPLICATION, the FET is always used in the region beyond the pinch-offplease mark me as BRAINLEST

Discussion

36.	How does laser security alaram warks.
Answer» Hey mate!! The essential detecting component of a laser security alarm is an infrared motion detector. It works by UTILIZING infrared light to notice any DIFFERENCE in heat. There is a laser diode that produces the laser BEAM which persistently strikes over the Light Dependent Laser sensors. Hope this will HELPS you...

36.

How does laser security alaram warks.

Answer»

Hey mate!!

The essential detecting component of a laser security alarm is an infrared motion detector. It works by UTILIZING infrared light to notice any DIFFERENCE in heat. There is a laser diode that produces the laser BEAM which persistently strikes over the Light Dependent Laser sensors.

Hope this will HELPS you...

Discussion

37.	1 astronomical unit, AU=
Answer» Answer: 1 ASTRONOMICAL UNIT is 92,955,807 MILES

37.

1 astronomical unit, AU=

Answer»

Answer:

1 ASTRONOMICAL UNIT is

92,955,807 MILES

Discussion

38.	THE SI UNITT OF TEMPARATURE
Answer» EXPLANATION: CELCIUS .... ..........

38.

THE SI UNITT OF TEMPARATURE

Answer»

EXPLANATION:

CELCIUS ....

..........

Discussion

39.	All moment of inertia
Answer» ANSWER: . EXPLANATION:

39.

All moment of inertia

Answer»

ANSWER:

.

EXPLANATION:

Discussion

40.	Discuss effects of air polltion on climate,plants,and animals?
Answer» Answer: air pollution affects plants and causes disturbance in photosynthesis air pollution increases the percentage of nitrogen, carbon dioxide, sulphur dioxide and causes global WARMING. which MAY affect ozone layer. it increases the temp of earth. seasons won't change. O level decreases. which may lead to the DEATH of ANIMALS due to insufficient oxygen Explanation: SINCE co2 is required for it to function

40.

Discuss effects of air polltion on climate,plants,and animals?

Answer»

Answer:

air pollution affects plants and causes disturbance in photosynthesis

air pollution increases the percentage of nitrogen, carbon dioxide, sulphur dioxide and causes global WARMING. which MAY affect ozone layer. it increases the temp of earth. seasons won't change.

O level decreases. which may lead to the DEATH of ANIMALS due to insufficient oxygen

Explanation:

SINCE co2 is required for it to function

Discussion

41.	Prove the equation of cyclotron frequency
Answer» The CYCLOTRON FREQUENCY of this CIRCULAR motion is ω c = q B / m and the cyclotron radius is r c = m v ⊥ / q B . Here v⊥ is the MAGNITUDE of the particle velocity perpendicular (⊥) to the magnetic field direction.

41.

Prove the equation of cyclotron frequency

Answer»

The CYCLOTRON FREQUENCY of this CIRCULAR motion is ω c = q B / m and the cyclotron radius is r c = m v ⊥ / q B . Here v⊥ is the MAGNITUDE of the particle velocity perpendicular (⊥) to the magnetic field direction.

Discussion

42.	Plzzzz.... some one help me in solving this qn. Solution urgently needed....
Answer» Answer: W = at + b By differtiation alpha = a t = 0 w = b b = 1 t= 2sec w = 5 5 = 2a + 1 a =2 alpha = 2 w = 2T + 1 Angular Displacement Integration A = t^2 + t t. = 4sec A = 20 +C At intial A°= 2 A = 22rad Thanks for Reading

42.

Plzzzz.... some one help me in solving this qn. Solution urgently needed....

Answer»

Answer:

W = at + b

By differtiation

alpha = a

t = 0

w = b

b = 1

t= 2sec

w = 5

5 = 2a + 1

a =2

alpha = 2

w = 2T + 1

Angular Displacement

Integration

A = t^2 + t

t. = 4sec

A = 20 +C

At intial A°= 2

A = 22rad

Thanks for Reading

Discussion

43.	Please solve this problem fast it's urgent
Answer» ANSWER: czbdgsfzmhjFDzfkhxdsJG

43.

Please solve this problem fast it's urgent

Answer»

ANSWER:

czbdgsfzmhjFDzfkhxdsJG

Discussion

44.	❣️❤️❣️hi friends ❣️❤️❣️what is Bouyancy,Thrust, Pressure and Density
Answer» Answer: Explanation: density is 1 meter cube VOLUME occupied by 1 kg mass. density = mass / volume thrust is the kind of force Buoyancy is UPTHRUST i.e force exerted by LIQUID on the object in the UPWARD direction . pressure is perpendicular force/ upthrust PER unit area. pressure = force / area

44.

❣️❤️❣️hi friends ❣️❤️❣️what is Bouyancy,Thrust, Pressure and Density

Answer»

Answer:

Explanation:

density is 1 meter cube VOLUME occupied by 1 kg mass.

density = mass / volume

thrust is the kind of force

Buoyancy is UPTHRUST i.e force exerted by LIQUID on the object in the UPWARD direction .

pressure is perpendicular force/ upthrust PER unit area.

pressure = force / area

Discussion

45.	Expression for displacement in uniformly accelerated motion
Answer» S = ut + 1/2at^2 u - INTIAL Speed a - Acceleration t - TIME S = V^2-u^2/2a v - FINAL Speed Thanks for Reading Mark it Brainlist

45.

Expression for displacement in uniformly accelerated motion

Answer»

S = ut + 1/2at^2

u - INTIAL Speed

a - Acceleration

t - TIME

S = V^2-u^2/2a

v - FINAL Speed

Thanks for Reading

Mark it Brainlist

Discussion

46.	Express the equation of cyclotron frequency
Answer» EXPLANATION: In inhomogeneous magnetic fields, B = B(R), this differential equation YIELDS three types of MOTION. The FIRST is the cyclotron motion around the magnetic field. The cyclotron frequency of this circular motion is ω c = q B / m and the cyclotron radius is r c = m v ⊥ / q B .

46.

Express the equation of cyclotron frequency

Answer»

EXPLANATION:

In inhomogeneous magnetic fields, B = B(R), this differential equation YIELDS three types of MOTION. The FIRST is the cyclotron motion around the magnetic field. The cyclotron frequency of this circular motion is ω c = q B / m and the cyclotron radius is r c = m v ⊥ / q B .

Discussion

47.	draw systematic diagram of a circuit consisting of three volt battery 5 ohm 3 ohm 1 ohm resistors and ammeter and plug key all connected in series
Answer» Answer: EXPLANATION: Drawn in the below PHOTOGRAPH.... Hope it helped u ... THANK .....

47.

draw systematic diagram of a circuit consisting of three volt battery 5 ohm 3 ohm 1 ohm resistors and ammeter and plug key all connected in series

Answer»

Answer:

EXPLANATION:

Drawn in the below PHOTOGRAPH....

Hope it helped u ...

THANK .....

Discussion

48.	The bulb does not go glow in the above diagram. List all the possible reasons.
Answer» Explanation: there is no switch. and it is connected to water which is POOR conductor of electricity. hope it HELPS you.....

48.

The bulb does not go glow in the above diagram. List all the possible reasons.

Answer»

Explanation:

there is no switch.
and it is connected to water which is POOR conductor of electricity.

hope it HELPS you.....

Discussion

49.	a fish tank is being carried on a car moving with constant horizontal acceleration. the level of water will be _____
Answer» ANSWER: Rise on the back side of the tank and FALL on front Explanation: For constant velocity the WATER level same on both sides. But at constant acceleration velocity changes equally per unit TIME . That PUSH the liquid back.

49.

a fish tank is being carried on a car moving with constant horizontal acceleration. the level of water will be _____

Answer»

ANSWER:

Rise on the back side of the tank and FALL on front

Explanation:

For constant velocity the WATER level same on both sides. But at constant acceleration velocity changes equally per unit TIME . That PUSH the liquid back.

Discussion

50.	Define magnetic lines of force and staye 2 properties
Answer» Answer: Magnetic lines of force determine the alignment and orientation of miniature test magnets in a magnetic field. 1. Magnetic lines of force start from the north pole and END at the south pole. 2. They are continuous through the body of magnet 3. Magnetic lines of force can pass through iron more easily than air. 4. TWO magnetic lines of force can not intersect each other. 5. They tend to contract LONGITUDINALLY. 6. They tend to EXPAND laterally.

50.

Define magnetic lines of force and staye 2 properties

Answer»

Answer:

Magnetic lines of force determine the alignment and orientation of miniature test magnets in a magnetic field.

1. Magnetic lines of force start from the north pole and END at the south pole.

2. They are continuous through the body of magnet

3. Magnetic lines of force can pass through iron more easily than air.

4. TWO magnetic lines of force can not intersect each other.

5. They tend to contract LONGITUDINALLY.

6. They tend to EXPAND laterally.

Discussion

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