67486 + Interview Questions in Secondary School in Physics

1.	What is the name for the frequency that make a musical note distinct?
Answer» $\huge\green{\mid{\fbox{{คภรฬєг⤵}}\mid}}$ Note frequency (hertz) Since the PHYSICAL causes of music are vibrations of mechanical systems, they are often MEASURED in hertz (HZ), with 1 Hz meaning ONE vibration per second. $\huge\fbox\red{hσpє}\huge\fbox\pink{ít}\fbox\green{hєlp}\huge\fbox\blue{yóû}$ $\huge\fbox{\red{\underline{mαrk \; mє \; вrαínlíєѕt \; plєαѕє ♥}}}$ $\large\bf{\underline\blue{❥thαnk \; чσu ♥♥}}$

1.

What is the name for the frequency that make a musical note distinct?

Answer»

$\huge\green{\mid{\fbox{{คภรฬєг⤵}}\mid}}$

Note frequency (hertz)

Since the PHYSICAL causes of music are vibrations of mechanical systems, they are often MEASURED in hertz (HZ), with 1 Hz meaning ONE vibration per second.

$\huge\fbox\red{hσpє}\huge\fbox\pink{ít}\fbox\green{hєlp}\huge\fbox\blue{yóû}$

$\huge\fbox{\red{\underline{mαrk \; mє \; вrαínlíєѕt \; plєαѕє ♥}}}$

$\large\bf{\underline\blue{❥thαnk \; чσu ♥♥}}$

Discussion

2.	3) what are two tyespes offorces? please Anwar me first
Answer» ANSWER: MECHANICAL FORCE , FRICTIONAL force

2.

3) what are two tyespes offorces? please Anwar me first

Answer»

ANSWER:

MECHANICAL FORCE , FRICTIONAL force

Discussion

3.	Why are speed of motion can rest consider relative
Answer» HI FRIEND Rest and motion are the RELATIVE terms because they depend on the observer's FRAME of reference. So if two different observers are not at rest with RESPECT to each other, then they too get different results when they observe the motion or rest of a body. HOPE IT HELPS PLEASE SUPPORT ME

3.

Why are speed of motion can rest consider relative

Answer»

HI FRIEND

Rest and motion are the RELATIVE terms because they depend on the observer's FRAME of reference. So if two different observers are not at rest with RESPECT to each other, then they too get different results when they observe the motion or rest of a body.

HOPE IT HELPS

PLEASE SUPPORT ME

Discussion

4.	For what displacement the potential energy becomes 1/4of it's maximum value
Answer»

Discussion

5.	A block of mass 2kg is moving on a rough surface of coefficient of 0.5, find frictional force on it
Answer» . $given : \: mass = 2kg \\ coefficient \: of \: friction(μ) = 0.5 \\ to\:find:friction\\finding:\\F_{(friction)}=μN\\=μ \times mg \\ = 0.5 \times 2 \times 10 \\ = 10N$ HOPE THIS HELPS MARK ME BRAINLIEST

5.

A block of mass 2kg is moving on a rough surface of coefficient of 0.5, find frictional force on it

Answer»

.

$given : \: mass = 2kg \\ coefficient \: of \: friction(μ) = 0.5 \\ to\:find:friction\\finding:\\F_{(friction)}=μN\\=μ \times mg \\ = 0.5 \times 2 \times 10 \\ = 10N$

HOPE THIS HELPS

MARK ME BRAINLIEST

Discussion

6.	B328B2DRB3JZECI. Multiple Choice Questions:1. A. Particles of matter attract each otherB. This attractive force will be different for different forms of mattera. Statement A alone is correctb. Statement B alone is correctc. Statement A and B both are correctd. Both Statements are not correct2. Statement 1. Carbon-di-oxide released by the animals, oxygen released from the trees, thejuice you are drinking and the books you are reading are all matters.Statement 2. All the matter has the same properties.a. Both the statements are rightb. Statement 1 alone is correctc. Statement 2 alone is correctd. Both the statements are wrong3.Among the following, which one is true with respect to Petrol?
Answer» Answer: 1. B 2. both please MARK as BRAIN LIST

6.

B328B2DRB3JZECI. Multiple Choice Questions:1. A. Particles of matter attract each otherB. This attractive force will be different for different forms of mattera. Statement A alone is correctb. Statement B alone is correctc. Statement A and B both are correctd. Both Statements are not correct2. Statement 1. Carbon-di-oxide released by the animals, oxygen released from the trees, thejuice you are drinking and the books you are reading are all matters.Statement 2. All the matter has the same properties.a. Both the statements are rightb. Statement 1 alone is correctc. Statement 2 alone is correctd. Both the statements are wrong3.Among the following, which one is true with respect to Petrol?

Answer»

Answer:

1. B

2. both

please MARK as BRAIN LIST

Discussion

7.	১ টি ট্রেনে একটি ইঞ্জিনের সাথে ১১ টি বগি সংযুক্ত আছে। ইঞ্জিনের পাশে একটি লোক দারানো। হটাৎ সমতরন এ ট্রেনটি চলতে শুরু করলো। ইঞ্জিনটি যদি লোকটিকে অতিক্রম করতে ৮সে. সময় নেয় তাহলে ট্রেনটির ৭ নম্বর বগি লোকটিকে অতিক্রম করতে কত সময় নিবে? ট্রেনের প্রতিটি বগির দৈর্ঘ্য, ইঞ্জিনের দৈর্ঘ্যের দেড় গুণ।
Answer» EXPLANATION: SORRY don't know the LANGUAGE can you TRANSLATE it in english

7.

১ টি ট্রেনে একটি ইঞ্জিনের সাথে ১১ টি বগি সংযুক্ত আছে। ইঞ্জিনের পাশে একটি লোক দারানো। হটাৎ সমতরন এ ট্রেনটি চলতে শুরু করলো। ইঞ্জিনটি যদি লোকটিকে অতিক্রম করতে ৮সে. সময় নেয় তাহলে ট্রেনটির ৭ নম্বর বগি লোকটিকে অতিক্রম করতে কত সময় নিবে? ট্রেনের প্রতিটি বগির দৈর্ঘ্য, ইঞ্জিনের দৈর্ঘ্যের দেড় গুণ।

Answer»

EXPLANATION:

SORRY don't know the LANGUAGE

can you TRANSLATE it in english

Discussion

8.	An obj. 3cm in height is held 30cm away from concave mirror of focal length 15cm. Draw the ray diagram and find the position ,size,and the nature of image formed?
Answer» ANSWER: answer is 6 Explanation: 3×30=90 then 90÷by15 =6 so 6CM is answer

8.

An obj. 3cm in height is held 30cm away from concave mirror of focal length 15cm. Draw the ray diagram and find the position ,size,and the nature of image formed?

Answer»

ANSWER:

answer is 6

Explanation:

3×30=90 then 90÷by15 =6 so 6CM is answer

Discussion

9.	Write the short notes on tinning.Drop 10x thnks plz
Answer» ANSWER: PLEASE MARK BRAINLIEST

9.

Write the short notes on tinning.Drop 10x thnks plz

Answer»

ANSWER:

PLEASE MARK BRAINLIEST

Discussion

10.	What is electrostatic force of attraction
Answer» Heya mate!!! The ELECTROSTATIC force is an attractive and repulsive force between particles are caused due to their ELECTRIC charges. The electric force between stationary CHARGED BODY is conventionally known as the electrostatic force. It is also referred to as Columb's force.

10.

What is electrostatic force of attraction

Answer»

Heya mate!!!

The ELECTROSTATIC force is an attractive and repulsive force between particles are caused due to their ELECTRIC charges. The electric force between stationary CHARGED BODY is conventionally known as the electrostatic force. It is also referred to as Columb's force.

Discussion

11.	An athelete completes one round of a circular track of diameter 200m in 40s. What will be the distance covered and the displacement at the end of 2 minutes 20s?NO WRONG ANSWERS.PLEASE ANSWER WITH FULL SOLUTION.
Answer» EXPLANATION: Given, diameter of the TRACK (d) = 200m Therefore, circumference of the track (πd) = 200π meters. Distance COVERED in 40 seconds = 200π meters Distance covered in 1 second = 200π/40 Distance covered in 2minutes and 20 seconds (140 seconds) = 140 200π/40 meters = (14020022)/(40* 7) meters = 2200 meters Number of laps completed by the athlete in 140 seconds = 140/40 = 3.5 Therefore, the final position of the athlete (with respect to the initial position) is at the opposite end of the CIRCULAR track. Therefore, the net displacement will be equal to the diameter of the track, which is 200m. Therefore, the net distance covered by the athlete is 2200 meters and the total displacement of the athlete is 200m.

11.

An athelete completes one round of a circular track of diameter 200m in 40s. What will be the distance covered and the displacement at the end of 2 minutes 20s?NO WRONG ANSWERS.PLEASE ANSWER WITH FULL SOLUTION.

Answer»

EXPLANATION:

Given, diameter of the TRACK (d) = 200m

Therefore, circumference of the track (π*d) = 200π meters.

Distance COVERED in 40 seconds = 200π meters

Distance covered in 1 second = 200π/40

Distance covered in 2minutes and 20 seconds (140 seconds) = 140 * 200π/40 meters

= (140*200*22)/(40* 7) meters = 2200 meters

Number of laps completed by the athlete in 140 seconds = 140/40 = 3.5

Therefore, the final position of the athlete (with respect to the initial position) is at the opposite end of the CIRCULAR track. Therefore, the net displacement will be equal to the diameter of the track, which is 200m.

Therefore, the net distance covered by the athlete is 2200 meters and the total displacement of the athlete is 200m.

Discussion

12.	What is the answer please answer fast
Answer» EXPLANATION: ans C here the answer may it help U

12.

What is the answer please answer fast

Answer»

EXPLANATION:

ans C

here the answer may it help U

Discussion

13.	10.Laser source isSingle choice.(1 Point)Highly directionalhighly monochromatichighly coherentall of above
Answer» ANSWER: b Explanation: PLZ MARK me as BRAINLIST

13.

10.Laser source isSingle choice.(1 Point)Highly directionalhighly monochromatichighly coherentall of above

Answer»

ANSWER:

b

Explanation:

PLZ MARK me as BRAINLIST

Discussion

14.	Answer this question if you know the answer please ☺️
Answer» Answer: 1. To FIND the SPEED from A-B: speed =distance/time 3cm/3 sec=1cm/sec 2.To find the speed from B-C: the BODY is at rest. 3.to find the speed from C-D speed=distance/time 4cm/2sec= 2cm/sec EXPLANATION:

14.

Answer this question if you know the answer please ☺️

Answer»

Answer:

1. To FIND the SPEED from A-B:

speed =distance/time

3cm/3 sec=1cm/sec

2.To find the speed from B-C:

the BODY is at rest.

3.to find the speed from C-D

speed=distance/time

4cm/2sec= 2cm/sec

EXPLANATION:

Discussion

15.	A projectile is fired with 50m/s at an angle of 37º find the time of ascent.Tf two
Answer» Need to FinD :- The time of ascent of the projectile. $\red{\frak{Given}}\begin{cases}\textsf{ A projectile is fired at an angle of } \sf 37^{\circ} .\\\textsf{ The <klux>VELOCITY</klux> of projection is 50m/s .}\end{cases}$ We know that the time of ascent of a projectile , when a BODY is projected at an angle theta , and with a Initial velocity of u is given by , u sinθ/G . This is also the Formula of time of descent . And the TOTAL time of FLIGHT is given by 2u sinθ / g . • Using Formula of Time of ascent :- $\sf\dashrightarrow Time_{(ascent)}= \dfrac{u\ sin\theta}{g} \\\\\sf\dashrightarrow Time_{(ascent)}= \dfrac{2 \times 50m/s \ sin37^{\circ} }{10m/s } \\\\\sf\dashrightarrow Time_{(ascent)}= 2\times 5 \times \dfrac{3}{5} s \\\\\sf\dashrightarrow Time_{(ascent)}= 2\times 3 s \\\\\sf\dashrightarrow\underset{\blue{\sf Required\ time }}{\underbrace{\boxed{\pink{\frak{ Time_{(ascent)}= 6s }}}}}$

15.

A projectile is fired with 50m/s at an angle of 37º find the time of ascent.Tf two

Answer»

Need to FinD :-

The time of ascent of the projectile.

$\red{\frak{Given}}\begin{cases}\textsf{ A projectile is fired at an angle of } \sf 37^{\circ} .\\\textsf{ The <klux>VELOCITY</klux> of projection is 50m/s .}\end{cases}$

We know that the time of ascent of a projectile , when a BODY is projected at an angle theta , and with a Initial velocity of u is given by , u sinθ/G . This is also the Formula of time of descent . And the TOTAL time of FLIGHT is given by 2u sinθ / g .

• Using Formula of Time of ascent :-

$\sf\dashrightarrow Time_{(ascent)}= \dfrac{u\ sin\theta}{g} \\\\\sf\dashrightarrow Time_{(ascent)}= \dfrac{2 \times 50m/s \ sin37^{\circ} }{10m/s } \\\\\sf\dashrightarrow Time_{(ascent)}= 2\times 5 \times \dfrac{3}{5} s \\\\\sf\dashrightarrow Time_{(ascent)}= 2\times 3 s \\\\\sf\dashrightarrow\underset{\blue{\sf Required\ time }}{\underbrace{\boxed{\pink{\frak{ Time_{(ascent)}= 6s }}}}}$

Discussion

16.	the atomic number of a element is 20 in which period of the Morden periodic table could this element be placed why? how will you decide whether the element is a metal or non metal?
Answer» EXPLANATION: HOPE it's will be HELP you

16.

the atomic number of a element is 20 in which period of the Morden periodic table could this element be placed why? how will you decide whether the element is a metal or non metal?

Answer»

EXPLANATION:

HOPE it's will be HELP you

Discussion

17.	What is Geometrical dimensions ?
Answer» Answer: Geometric Dimensioning and TOLERANCING (GD&T) is a system for DEFINING and communicating engineering tolerances. It USES a symbolic language on engineering drawings and computer-generated three-dimensional solid models that EXPLICITLY describe nominal geometry and its allowable variation.

17.

What is Geometrical dimensions ?

Answer»

Answer:

Geometric Dimensioning and TOLERANCING (GD&T) is a system for DEFINING and communicating engineering tolerances. It USES a symbolic language on engineering drawings and computer-generated three-dimensional solid models that EXPLICITLY describe nominal geometry and its allowable variation.

Discussion

18.	Write any one condition for ohm's low.
Answer» At constant temperature the current flowing through a conductor is directly PROPORTIONAL to the porential difference ACROSS its ENDS. This law is obeyed when the PHYSICAL CONDITIONS of the conductor remains same. # Capricorn answer

18.

Write any one condition for ohm's low.

Answer»

At constant temperature the current flowing through a conductor is directly PROPORTIONAL to the porential difference ACROSS its ENDS. This law is obeyed when the PHYSICAL CONDITIONS of the conductor remains same.

# Capricorn answer

Discussion

19.	Plz ans correctlyA body completes one complete revolution around a circular park of circumference 308 m in 4 min. What is the distance and displacement of the body after 6 min. *1 pointDistance = 264 m , displacement = 56 mDistance = 462 m , displacement = 98 mDistance = 364 m , displacement = 26 mDistance = 564 m , displacement = 26 m
Answer» ANSWER: sorry Explanation: I don't KNOW this..

19.

Plz ans correctlyA body completes one complete revolution around a circular park of circumference 308 m in 4 min. What is the distance and displacement of the body after 6 min. *1 pointDistance = 264 m , displacement = 56 mDistance = 462 m , displacement = 98 mDistance = 364 m , displacement = 26 mDistance = 564 m , displacement = 26 m

Answer»

ANSWER:

sorry

Explanation:

I don't KNOW this..

Discussion

20.	Deriveandrelationelectron.E = hf
Answer» Answer: In CLASSICAL format, the Planck constant can be derived from the Planck mass, Planck length and Planck time. In wave format, the Planck constant was derived from the Transverse Energy Equation and provided in detail on the page on the Planck relation (E=hf). The Planck constant APPEARS as a combination of wave constant values when solving for energy when transverse wavelength (or frequency) is variable. It is a proportionality constant that was derived in detail in the Particle Energy and INTERACTION paper – it’s a combination of other constants in an energy equation that expresses the binding energy between the ATOMIC nucleus and an electron at distance, leaving a variable for the frequency of a photon that is generated or absorbed.

20.

Deriveandrelationelectron.E = hf

Answer»

Answer:

In CLASSICAL format, the Planck constant can be derived from the Planck mass, Planck length and Planck time. In wave format, the Planck constant was derived from the Transverse Energy Equation and provided in detail on the page on the Planck relation (E=hf). The Planck constant APPEARS as a combination of wave constant values when solving for energy when transverse wavelength (or frequency) is variable. It is a proportionality constant that was derived in detail in the Particle Energy and INTERACTION paper – it’s a combination of other constants in an energy equation that expresses the binding energy between the ATOMIC nucleus and an electron at distance, leaving a variable for the frequency of a photon that is generated or absorbed.

Discussion

21.	A) Express how work can be negative,positive and zero.b) What is the relationship between kilowatt-hour and joule.
Answer» Answer: hi buddy LET may explain you Explanation: 0 - + it may in FORM integers rational number life maths JOULE is UNIT of engry kilowatt is use electric house Kw thank you please like me and mark as BRAINLEST

21.

A) Express how work can be negative,positive and zero.b) What is the relationship between kilowatt-hour and joule.

Answer»

Answer:

hi buddy

LET may explain you

Explanation:

0 - + it may in FORM integers rational number life maths

JOULE is UNIT of engry

kilowatt is use electric house Kw

thank you

please like me

and mark as BRAINLEST

Discussion

22.	Physics: Answer with good Explanation
Answer» Answer: may tanong ako ANO ANG COMMON LESS ng english tungkol SA pandemya 2 word

22.

Physics: Answer with good Explanation

Answer»

Answer:

may tanong ako ANO ANG COMMON LESS ng english tungkol SA pandemya 2 word

Discussion

23.	So how to solve this ?
Answer» ANSWER: I don't KNOW OK MAN

23.

So how to solve this ?

Answer»

ANSWER:

I don't KNOW OK MAN

Discussion

24.	An Energy produced by the virtue of his motion if its initial velocity is zero and final be v then derive the expression
Answer» ANSWER: reach the goal U are AIM is FINISHED

24.

An Energy produced by the virtue of his motion if its initial velocity is zero and final be v then derive the expression

Answer»

ANSWER:

reach the goal U are AIM is FINISHED

Discussion

25.	2) what are good conductors ofelectricity?
Answer» Most metals are considered to be GOOD conductors of electrical CURRENT. Copper is just one of the more popular materials that is used for conductors. Other materials that are sometimes used as conductors are SILVER, GOLD, and aluminum. hope HELPFUL for you

25.

2) what are good conductors ofelectricity?

Answer»

Most metals are considered to be GOOD conductors of electrical CURRENT. Copper is just one of the more popular materials that is used for conductors. Other materials that are sometimes used as conductors are SILVER, GOLD, and aluminum.

hope HELPFUL for you

Discussion

26.	A liquid flows into a vessel initially empty at a steadyrate of 70 cm’s-1. The pictorial representation(graph) of the increase in the mass of the vessel withtime is given below.(i) What does the point A represent?(ii) What does the horizontal line beyondB indicate?(iii) Find the capacity of the vessel. (iv) Find the density of the liquid.please answer this correctly and as fast as possible.
Answer» Answer: (i) calculate L.C. =pitch NUMBER of division on circular scale (ii) P.S.R = NTH division × pitch (III) Observed reading =P.S.R +(H.S.R×L.C.) (iv) Zero error =[H.S.R. + (N -n) ×L.C.] (v) CORRECTIONS is positive if error is negative (vi) Correct measurement = observed reading + correction. (vii) Correct measurement =7.25 mm

26.

A liquid flows into a vessel initially empty at a steadyrate of 70 cm’s-1. The pictorial representation(graph) of the increase in the mass of the vessel withtime is given below.(i) What does the point A represent?(ii) What does the horizontal line beyondB indicate?(iii) Find the capacity of the vessel. (iv) Find the density of the liquid.please answer this correctly and as fast as possible.

Answer»

Answer:

(i) calculate L.C.

=pitch NUMBER of division on circular scale

(ii) P.S.R = NTH division × pitch

(III) Observed reading =P.S.R +(H.S.R×L.C.)

(iv) Zero error =[H.S.R. + (N -n) ×L.C.]

(v) CORRECTIONS is positive if error is negative

(vi) Correct measurement = observed reading + correction.

(vii) Correct measurement =7.25 mm

Discussion

27.	State the properties of ẞ particles.
Answer» Explanation: Beta particles have a mass which is half of one thousandth of the mass of a PROTON and carry either a single negative (electron) or positive (positron) charge. As they have a small mass and can be RELEASED with HIGH energy, they can reach relativistic speeds (CLOSE to the speed of light

27.

State the properties of ẞ particles.

Answer»

Explanation:

Beta particles have a mass which is half of one thousandth of the mass of a PROTON and carry either a single negative (electron) or positive (positron) charge. As they have a small mass and can be RELEASED with HIGH energy, they can reach relativistic speeds (CLOSE to the speed of light

Discussion

28.	A car travelling with a speed of 20 km/hr comes into rest in 0.5 hour. What will be the value of its acceleration in metre per second square
Answer» V = 0 km/hr U = 20 km/hr t = 0.5 hr Hence, Acceleration, a = (v-u) / t a = (0-20) /0.5 a = - 20/0.5 a = - 200/5 a = -40km/ h

28.

A car travelling with a speed of 20 km/hr comes into rest in 0.5 hour. What will be the value of its acceleration in metre per second square

Answer»

V = 0 km/hr

U = 20 km/hr

t = 0.5 hr

Hence,

Acceleration, a = (v-u) / t

a = (0-20) /0.5

a = - 20/0.5

a = - 200/5

a = -40km/ h

Discussion

29.	Explain why sulphide ion (S2−) has -2 charge?help me (◕ᴗ◕✿)(◕ᴗ◕✿)
Answer» EXPLANATION: GOOD AFTERNOON FRIENDS WHAT NAME

29.

Explain why sulphide ion (S2−) has -2 charge?help me (◕ᴗ◕✿)(◕ᴗ◕✿)

Answer»

EXPLANATION:

GOOD AFTERNOON FRIENDS

WHAT NAME

Discussion

30.	A moving coil ammeter has a uniform scale with 50 divisions and gives a full scale readingof 5A, the instrument can read upto 5th of the scale division with a fair degree of certainty.Estimate the resolution of the instrument in mA.
Answer» Answer: A moving coil voltmeter has a uniform SCALE with100 DIVISIONS, scale full reading is 200 volt and 1/10 of ASCALE division can be estimated with a fair degree ofcertainty. Determine the resolution of INSTRUMENT in volt

30.

A moving coil ammeter has a uniform scale with 50 divisions and gives a full scale readingof 5A, the instrument can read upto 5th of the scale division with a fair degree of certainty.Estimate the resolution of the instrument in mA.

Answer»

Answer:

A moving coil voltmeter has a uniform SCALE with100 DIVISIONS, scale full reading is 200 volt and 1/10 of ASCALE division can be estimated with a fair degree ofcertainty. Determine the resolution of INSTRUMENT in volt

Discussion

31.	A simple pendulum is completely submerged under water. Discuss the Variation in its time period.
Answer» Answer: It will definitely atllternate Explanation: as PENDULUM should not move EASILY through the water as compared to the air. so its time PERIOD will increase in under water

31.

A simple pendulum is completely submerged under water. Discuss the Variation in its time period.

Answer»

Answer:

It will definitely atllternate

Explanation:

as PENDULUM should not move EASILY through the water as compared to the air. so its time PERIOD will increase in under water

Discussion

32.	What is Kinetic theory of matter ??? hindi me smajao
Answer» Explanation: 1=> EVERY matter is made up of tiny particles called molecules it means:- har matter yani har cheez jo bhi space occupy krti hai jismei mass hota hai woh bahut CHHOTE particle yani molecule se bani hoti hai 2=> molecules of a substance are identical in shape, size, and mass. however molecules of different substances MAY have different shape, size, mass, composition. it means:- jo bhi molecules 1 Matter banane mei use HOTE hai unka shape, size, and mass same hota hai par hr substances ke molecules alg alg hote hai. 3=> molecules are continuously in a state of random motion. it means:- ki kisi bhi substances mei molecules humesha move krte rhte hai. hope you understood everything:) ❤MissAstonish❤

32.

What is Kinetic theory of matter ??? hindi me smajao

Answer»

Explanation:

1=> EVERY matter is made up of tiny particles called molecules

it means:-

har matter yani har cheez jo bhi space occupy krti hai jismei mass hota hai woh bahut CHHOTE particle yani molecule se bani hoti hai

2=> molecules of a substance are identical in shape, size, and mass. however molecules of different substances MAY have different shape, size, mass, composition.

it means:-

jo bhi molecules 1 Matter banane mei use HOTE hai unka shape, size, and mass same hota hai par hr substances ke molecules alg alg hote hai.

3=> molecules are continuously in a state of random motion.

it means:-

ki kisi bhi substances mei molecules humesha move krte rhte hai.

hope you understood everything:)

❤MissAstonish❤

Discussion

33.	A gas laser is havingSingle choice.(1 Point)Gas as a active mediumGas as a pumping agentboth (i) and (ii)None of the above
Answer» ANSWER: BOTH A AND B IS THE CORRECT ANSWER MARK AS BARILY PLEASE

33.

A gas laser is havingSingle choice.(1 Point)Gas as a active mediumGas as a pumping agentboth (i) and (ii)None of the above

Answer»

ANSWER:

BOTH A AND B IS THE CORRECT ANSWER MARK AS BARILY PLEASE

Discussion

34.	1.The pressure inside a fluid ________ with deptha) emains constantb) decreasesc) can`t be determinedd) increases2.The pressure inside a liquid _________ in all directiona) constantb) variable3.The atmospheric pressure ______________ as we move upwardsa) increasesb) remains constantc) Decreasesd) can`t be determined4.The pressure inside us that balances effect of atmospheric pressurea) Blood Pressureb) Air Pressure5.A boy have been sent to moon from earth. What will happen to his massa) Remain constantb) Decreasec) Increase
Answer» INCREASES variable decreases Blood pressure Decrease

34.

1.The pressure inside a fluid ____ with deptha) emains constantb) decreasesc) can`t be determinedd) increases2.The pressure inside a liquid _ in all directiona) constantb) variable3.The atmospheric pressure __________ as we move upwardsa) increasesb) remains constantc) Decreasesd) can`t be determined4.The pressure inside us that balances effect of atmospheric pressurea) Blood Pressureb) Air Pressure5.A boy have been sent to moon from earth. What will happen to his massa) Remain constantb) Decreasec) Increase

Answer»

INCREASES
variable
decreases
Blood pressure
Decrease

Discussion

35.	If two vectors 2i+j+k and i+aj+3k are perpendicular to each other then find the magnitude of a
Answer» ANSWER: *a = -5* Explanation: Using formula :- X.Y = XY costheta X = 2i + j + k Y = I + aj + 3k X.Y = 2 + a + 3 = 5+a cos THETA = cos 90° = 0 X.Y = 0 a = -5

35.

If two vectors 2i+j+k and i+aj+3k are perpendicular to each other then find the magnitude of a

Answer»

ANSWER:

a = -5

Explanation:

Using formula :- X.Y = XY costheta

X = 2i + j + k

Y = I + aj + 3k

X.Y = 2 + a + 3 = 5+a

cos THETA = cos 90° = 0

X.Y = 0

a = -5

Discussion

36.	A car is moving with initial velocity 2m/s and acceleration 4 m/s2.Find the distance travelled by the car in 9 th second
Answer» Question - If a body is moving with an initial velocity of 3m/s and an acceleration of 2m/s, then what will be the distance travelled by the 4th second? Answer - When t=4 s= ut+ 0.5 X at^2 s= 3 x 4+ 0.5 x 2 x 4^2 s= 12+ 16 s= 28 m When t=3 s= ut+ 0.5 x at^2 s= 3 x 3+ 0.5 x 2 x 3^2 s= 9+ 9 s= 18 m

36.

A car is moving with initial velocity 2m/s and acceleration 4 m/s2.Find the distance travelled by the car in 9 th second

Answer»

Question - If a body is moving with an initial velocity of 3m/s and an acceleration of 2m/s, then what will be the distance travelled by the 4th second?

Answer - When t=4

s= ut+ 0.5 X at^2

s= 3 x 4+ 0.5 x 2 x 4^2

s= 12+ 16

s= 28 m

When t=3

s= ut+ 0.5 x at^2

s= 3 x 3+ 0.5 x 2 x 3^2

s= 9+ 9

s= 18 m

Discussion

37.	Give example for natural and synthetic fibres
Answer» Explanation: i HOPE it helps u MARL as BRAIN LIST

37.

Give example for natural and synthetic fibres

Answer»

Explanation:

i HOPE it helps u

MARL as BRAIN LIST

Discussion

38.	Explian Speed, Velocity and Acceleration
Answer» ANSWER : Speed : It is a DISTANCE of an OBJECT TRAVELLED in the specific amount of time. Velocity : It is the distance travelled by per UNIT time in the given direction. Acceleration : It measures the arte of change in velocity. Happy learning...

38.

Explian Speed, Velocity and Acceleration

Answer»

ANSWER :

Speed : It is a DISTANCE of an OBJECT TRAVELLED in the specific amount of time.

Velocity : It is the distance travelled by per UNIT time in the given direction.

Acceleration : It measures the arte of change in velocity.

Happy learning...

Discussion

39.	Q.3 The horizontal and verticalcomponent of magnetic field ofEarth are same at some placeon the surface of Earth Themagnetic dip angle at this placewill be *O 30 degreeO45 degree0 degree90 degree
Answer» ANSWER: I don't KNOW the answer but WAIT ANYONE ELSE can answer it

39.

Q.3 The horizontal and verticalcomponent of magnetic field ofEarth are same at some placeon the surface of Earth Themagnetic dip angle at this placewill be *O 30 degreeO45 degree0 degree90 degree

Answer»

ANSWER:

I don't KNOW the answer but WAIT ANYONE ELSE can answer it

Discussion

40.	The uncertainty principle holds for
Answer» Answer: The COMPLETE rule stipulates that the product of the uncertainties in position and VELOCITY is equal to or greater than a tiny PHYSICAL quantity, or CONSTANT (h/(4π), where h is Planck's constant, or about 6.6 × 10−34 joule-second). ... The uncertainty principle arises from the wave-particle duality.

40.

The uncertainty principle holds for

Answer»

Answer:

The COMPLETE rule stipulates that the product of the uncertainties in position and VELOCITY is equal to or greater than a tiny PHYSICAL quantity, or CONSTANT (h/(4π), where h is Planck's constant, or about 6.6 × 10−34 joule-second). ... The uncertainty principle arises from the wave-particle duality.

Discussion

41.	Charge Q on a capacitor varies with voltage V as shown in figure, where Q is taken along X- axis and V along Y- axis. The area of triangle OAB represents ----------(a) Capacitance (b) capacitive reactance (c) electric field between the plates (d) energy stored in the capacitor.
Answer» CAPACITANCE is the ANSWER

Discussion

42.	Acceleration definition
Answer» $\huge \mathfrak\fcolorbox{pink}{lavenderblush}{Answer♡}$ In mechanics, acceleration is the rate of change of the velocity of an OBJECT with RESPECT to time. ACCELERATIONS are vector quantities (in that they have magnitude and direction). The orientation of an object's acceleration is given by the orientation of the net FORCE acting on that object.

42.

Acceleration definition

Answer»

$\huge \mathfrak\fcolorbox{pink}{lavenderblush}{Answer♡}$

In mechanics, acceleration is the rate of change of the velocity of an OBJECT with RESPECT to time. ACCELERATIONS are vector quantities (in that they have magnitude and direction). The orientation of an object's acceleration is given by the orientation of the net FORCE acting on that object.

Discussion

43.	Questions tage he did not come answers
Answer» GIVEN SENTENCE - He did not COME. ANSWER - He did not come, did he? THANK you!

43.

Questions tage he did not come answers

Answer»

GIVEN SENTENCE - He did not COME.

ANSWER - He did not come, did he?

THANK you!

Discussion

44.	A block of mass 2kg is moving on a rough surface of coefficient of friction 0.5, find the frictional force on it.
Answer» ANSWER: $47 \sqrt{ = 44} log( \binom{ \infty kr}{?} )$

44.

A block of mass 2kg is moving on a rough surface of coefficient of friction 0.5, find the frictional force on it.

Answer»

ANSWER:

$47 \sqrt{ = 44} log( \binom{ \infty kr}{?} )$

Discussion

45.	A resistor and a capacitor are connected in series with an A.C source. If the potential drop across thee capacitor is 5 V that across the resistor is 12 V, then applied voltage is -----(a) 13 V (b) 17 V (c) 5 V (d) 12 V
Answer» √ V 2 R + V 2 C = √ 12 × 12 + 5 × 5 = √ 144 + 25 = Explanation: a) 13V I HOPE USEFUL to you

45.

A resistor and a capacitor are connected in series with an A.C source. If the potential drop across thee capacitor is 5 V that across the resistor is 12 V, then applied voltage is -----(a) 13 V (b) 17 V (c) 5 V (d) 12 V

Answer»

√

V

2

R

+

V

2

C

=

√

12

×

12

+

5

×

5

=

√

144

+

25

=

Explanation:

a) 13V I HOPE USEFUL to you

Discussion

46.	What type of quantity is work
Answer» Answer: SCALAR quantity Work is a scalar quantity, so it has only MAGNITUDE and no DIRECTION. Work transfers energy from ONE place to ANOTHER, or one form to another.

46.

What type of quantity is work

Answer»

Answer:

SCALAR quantity

Work is a scalar quantity, so it has only MAGNITUDE and no DIRECTION. Work transfers energy from ONE place to ANOTHER, or one form to another.

Discussion

47.	3. A short magnetic dipole hasmagnetic moment 0.5 A- ma.Calculate its magnetic field at adistance of 20 cm from the centre ofmagnetic dipole on the axis (Given Mo= 4 Ttx10-7 Sl units)*O A. 2.5 X 10-5 Wb/m2B. 1.25 X 10-5 Wb/m2O C. 3.75X 10-5 Wb/m2O D. 5X10-5 Wb/m2
Answer» I HOPE it's HELP U MARK barinlst

47.

3. A short magnetic dipole hasmagnetic moment 0.5 A- ma.Calculate its magnetic field at adistance of 20 cm from the centre ofmagnetic dipole on the axis (Given Mo= 4 Ttx10-7 Sl units)*O A. 2.5 X 10-5 Wb/m2B. 1.25 X 10-5 Wb/m2O C. 3.75X 10-5 Wb/m2O D. 5X10-5 Wb/m2

Answer»

I HOPE it's HELP U MARK barinlst

Discussion

48.	If the speed of light is 0.000000009 in one ms then how much speed will require for one minute
Answer» ANSWER: ok Explanation: for 1 MINUTE it will be 0.000000054 which will be 5.4×10^8

48.

If the speed of light is 0.000000009 in one ms then how much speed will require for one minute

Answer»

ANSWER:

ok

Explanation:

for 1 MINUTE it will be 0.000000054

which will be 5.4×10^8

Discussion

49.	Electroplating is possible through
Answer» ANSWER: Electroplating INVOLVES passing an electric current through a SOLUTION CALLED an electrolyte. Explanation: mark me as branliest

49.

Electroplating is possible through

Answer»

ANSWER:

Electroplating INVOLVES passing an electric current through a SOLUTION CALLED an electrolyte.

Explanation:

mark me as branliest

Discussion

50.	Maths : Numerical Question Answer with good Explanation.
Answer» REFER to the ATTACHED IMAGE.

50.

Maths : Numerical Question Answer with good Explanation.

Answer»

REFER to the ATTACHED IMAGE.

Discussion

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