6277 + Interview Questions in Physics Page 76 InterviewSolution

3751.	What is the process by which a layer of one metal can be deposited on top of another metal? What kind of metals are usually electroplated? [3 MARKS]
Answer» What is the process by which a layer of one metal can be deposited on top of another metal? What kind of metals are usually electroplated? [3 MARKS]

Discussion

3752.	To remove myopia a lens of power 9.66D is reqiured. The dis†an t point of eye i
Answer» To remove myopia a lens of power 9.66D is reqiured. The dis†an t point of eye i

Discussion

3753.	What is meant by the ‘volume’ of an object?
Answer» What is meant by the ‘volume’ of an object?

Discussion

3754.	Question 2 (a)Convert the following temperatures to the Kelvin scale. (a)25∘C
Answer» Question 2 (a) Convert the following temperatures to the Kelvin scale. $(a) 25^{\circ} C$

Discussion

3755.	is electromagnet stronger than magnet
Answer» is electromagnet stronger than magnet

Discussion

3756.	34. WHAT IS THE R.M.S SPEED OF A MOIST PARTICLE OF MASS 10 POWER -12 AT 27C TEMPERATURE ACCORDING TO KINETIC MOLECULAR THEORY?
Answer» 34. WHAT IS THE R.M.S SPEED OF A MOIST PARTICLE OF MASS 10 POWER -12 AT 27C TEMPERATURE ACCORDING TO KINETIC MOLECULAR THEORY?

Discussion

3757.	The magnitude of pairs of displacement vectors are given .Which pairs of displacement vectors cannot be added to give a resul†an t vector of magnitude 13cm? 1)4cm,16cm 2)20cm,7 cm 3)1cm ,15 cm 4)6cm,8
Answer» The magnitude of pairs of displacement vectors are given .Which pairs of displacement vectors cannot be added to give a resul†an t vector of magnitude 13cm? 1)4cm,16cm 2)20cm,7 cm 3)1cm ,15 cm 4)6cm,8

Discussion

3758.	A battery contains chemical energy and changes it into electrical energy but when it gets charged the energy going into is electrical energy. So my question is that can a battery change electrical energy into chemical energy
Answer» A battery contains chemical energy and changes it into electrical energy but when it gets charged the energy going into is electrical energy. So my question is that can a battery change electrical energy into chemical energy

Discussion

3759.	Name a safety device used in the electric circuit. What is the function of a safety device?
Answer» Name a safety device used in the electric circuit. What is the function of a safety device?

Discussion

3760.	Miniature Circuit Breaker or MCB is also known as___
Answer» Miniature Circuit Breaker or MCB is also known as___

Discussion

3761.	In the potentiometer circuit shown in figure the internal resistance of the 6 V battery is 1 ohm and the length of the wire AB is 100 cm. When AD = 60 cm the galvanometer shows no deflection. The emf of cell C is (the resistance of wire AB is 2 ohm)
Answer» In the potentiometer circuit shown in figure the internal resistance of the 6 V battery is 1 ohm and the length of the wire AB is 100 cm. When AD = 60 cm the galvanometer shows no deflection. The emf of cell C is (the resistance of wire AB is 2 ohm)

Discussion

3762.	What is Theramal powe
Answer» What is Theramal powe

Discussion

3763.	1L of a mixture of CO and CO2 becomes 1.6L when passed through a red hot charcoal, CO2 in the mixture
Answer» 1L of a mixture of CO and $C O_{2}$ becomes 1.6L when passed through a red hot charcoal, $C O_{2}$ in the mixture

Discussion

3764.	________ is the measure of hotness or coldness of a body.
Answer» ________ is the measure of hotness or coldness of a body.

Discussion

3765.	imagine a light planet revolving around a very massive star in circular orbit of radius R with a period of revolution T. If tje gravitational force of attraction between the planet and the star is proportional to R-5/2, then T² is proportional to
Answer» imagine a light planet revolving around a very massive star in circular orbit of radius R with a period of revolution T. If tje gravitational force of attraction between the planet and the star is proportional to R-5/2, then T² is proportional to

Discussion

3766.	A plane mirror is approaching an object from a distance of 30 m with a speed of 3 m/s. Find the speed of the image as seen from the object.
Answer» A plane mirror is approaching an object from a distance of $30 m$ with a speed of $3 m/s$ . Find the speed of the image as seen from the object.

Discussion

3767.	Why photons doesn't get attracted by gravity ?
Answer» Why photons doesn't get attracted by gravity ?

Discussion

3768.	The average distance between the Moon and the Earth is ___ km.
Answer» The average distance between the Moon and the Earth is ___ km.

Discussion

3769.	What is a kaleidoscope
Answer» What is a kaleidoscope

Discussion

3770.	A body is said to be at ___ if it does not change its position with respect to the reference point.
Answer» A body is said to be at ___ if it does not change its position with respect to the reference point.

Discussion

3771.	What is speed
Answer» What is speed

Discussion

3772.	How does people change the colour of light artificially?
Answer» How does people change the colour of light artificially?

Discussion

3773.	SI unit of length is:
Answer» SI unit of length is:

Discussion

3774.	A horizontal plane mirror and a vertical wall are placed in such a way that the centre of the horizontal plane mirror is at a distance d from the vertical wall. The mirror is rotated with ω in clockwise direction.Incident light falls at centre C as shown in the figure, then linear velocity of spot (S) formed on wall is
Answer» A horizontal plane mirror and a vertical wall are placed in such a way that the centre of the horizontal plane mirror is at a distance $d$ from the vertical wall. The mirror is rotated with $ω$ in clockwise direction. Incident light falls at centre $C$ as shown in the figure, then linear velocity of spot $(S)$ formed on wall is

Discussion

3775.	Identify the energy conversion in an electrical cell.
Answer» Identify the energy conversion in an electrical cell.

Discussion

3776.	Find the focal length of a mirror if the object is placed 40 cm from the pole of the mirror and the image is formed at a distance of 20 cm from the pole on the other side of the mirror. Apply sign convention and also determine the nature of the mirror.
Answer» Find the focal length of a mirror if the object is placed $40 cm$ from the pole of the mirror and the image is formed at a distance of $20 cm$ from the pole on the other side of the mirror. Apply sign convention and also determine the nature of the mirror.

Discussion

3777.	30.Find the elecric potential at the point o due to segment of ring as shown whose linear charge density is 4 coulomb per metre
Answer» 30.Find the elecric potential at the point o due to segment of ring as shown whose linear charge density is 4 coulomb per metre

Discussion

3778.	Explain the method of charging an object by friction
Answer» Explain the method of charging an object by friction

Discussion

3779.	Harish runs faster than Suresh to cover the same distance. Which fundamental physical quantity is used for comparing their speeds?
Answer» Harish runs faster than Suresh to cover the same distance. Which fundamental physical quantity is used for comparing their speeds?

Discussion

3780.	Which of the following will allow the sound waves to travel through it?
Answer» Which of the following will allow the sound waves to travel through it?

Discussion

3781.	While measuring the temperature of boiling water, sushweta found the temperature to be 85 degrees centigrade only. What can be the probable reason for this?
Answer» While measuring the temperature of boiling water, sushweta found the temperature to be 85 degrees centigrade only. What can be the probable reason for this?

Discussion

3782.	if H is the harmonic mean between p and q then find the value of H/p+H/q
Answer» if H is the harmonic mean between p and q then find the value of H/p+H/q

Discussion

3783.	41. Is electricity the flow of electrons?
Answer» 41. Is electricity the flow of electrons?

Discussion

3784.	Which among the following object is at rest?
Answer» Which among the following object is at rest?

Discussion

3785.	Two objects move towards each other till they meet at a point. The speed of first object is 5 ms−1 and the speed of the second object is 10 ms−1. If the distance between the objects is 30 m initially, what is the difference between the distances travelled by the two bodies?
Answer» Two objects move towards each other till they meet at a point. The speed of first object is $5 m s^{- 1}$ and the speed of the second object is $10 m s^{- 1}$ . If the distance between the objects is $30 m$ initially, what is the difference between the distances travelled by the two bodies?

Discussion

3786.	in a new unit system,unit of time is equal to 20 second, 1 unit of mass is 10kg and 1 unit of lenght is 5 m . in the new system of units, 1 unit of energy is equal to ?
Answer» in a new unit system,unit of time is equal to 20 second, 1 unit of mass is 10kg and 1 unit of lenght is 5 m . in the new system of units, 1 unit of energy is equal to ?

Discussion

3787.	In an electric bell, when the electromagnet pulls the iron strip, it also breaks the circuit. The current through the coil stops flowing. In this case, will the coil remain an electromagnet? How does an electric bell ring then?
Answer» In an electric bell, when the electromagnet pulls the iron strip, it also breaks the circuit. The current through the coil stops flowing. In this case, will the coil remain an electromagnet? How does an electric bell ring then?

Discussion

3788.	Which of the following is correct with respect to elasticity?
Answer» Which of the following is correct with respect to elasticity?

Discussion

3789.	Himanshu has two lenses A and B. When he touches both the lenses he finds that A is thicker at the centre than at the edges and B is thinner at the centre as compared to its edges. He has to focus sunlight on a particular point. Which one of them can he use?
Answer» Himanshu has two lenses A and B. When he touches both the lenses he finds that A is thicker at the centre than at the edges and B is thinner at the centre as compared to its edges. He has to focus sunlight on a particular point. Which one of them can he use?

Discussion

3790.	Which of the following is true with respect to an object in periodic motion?
Answer» Which of the following is true with respect to an object in periodic motion?

Discussion

3791.	Why cannot we see an upside down image of the sun through the pinhole camera?
Answer» Why cannot we see an upside down image of the sun through the pinhole camera?

Discussion

3792.	A cube with a mass m= 20g floats on the surface of water. Each face of the cube is 3cm long. what is the distance between lower surface of the cube and surface of the water? (Surface tension of water = 70 × 103 N/m)
Answer» A cube with a mass m= 20g floats on the surface of water. Each face of the cube is 3cm long. what is the distance between lower surface of the cube and surface of the water? (Surface tension of water = 70 $\times$ $10^{3}$ N/m)

Discussion

3793.	Suppose a body ‘A’ at a higher temperature is brought into contact with another body ‘B’ at a lower temperature. Will the temperature of B increase? Explain.
Answer» Suppose a body ‘A’ at a higher temperature is brought into contact with another body ‘B’ at a lower temperature. Will the temperature of B increase? Explain.

Discussion

3794.	A refrigerator based on carnots cycle receives heat from 227^° c and rejects heat at 727^° c . let work required per unit heat received be x . if the same machine is used as carnots engine then its efficiency is y . then ratio of x and y is
Answer» A refrigerator based on carnots cycle receives heat from 227^° c and rejects heat at 727^° c . let work required per unit heat received be x . if the same machine is used as carnots engine then its efficiency is y . then ratio of x and y is

Discussion

3795.	Suppose in a house there are four bulbs of 100 W each, six of 60 W each and six of 40 W each. All of them are used for two hours a day. How many units of electricity will be used up in 30 days? How much will they have to pay at Rs. 2.80 /- per unit?
Answer» Suppose in a house there are four bulbs of 100 W each, six of 60 W each and six of 40 W each. All of them are used for two hours a day. How many units of electricity will be used up in 30 days? How much will they have to pay at Rs. 2.80 /- per unit?

Discussion

3796.	450 = ___. [Enter a numerical value] ___
Answer» $45^{0}$ = ___. [Enter a numerical value] ___

Discussion

3797.	{ When two liquid of same volume but different densities }}_1 and }ρ_2 are mixed together, then the density of the } mixture is
Answer» { When two liquid of same volume but different densities }}_1 and }ρ_2 are mixed together, then the density of the } mixture is

Discussion

3798.	On cold region, if somebody lick a metal pole its tounge get stuck to the metal pole?
Answer» On cold region, if somebody lick a metal pole its tounge get stuck to the metal pole?

Discussion

3799.	Difference between microscopic physics and mesoscopic physics?
Answer» Difference between microscopic physics and mesoscopic physics?

Discussion

3800.	For a spherical mirror, the graph of 1/v versus 1/u is ?
Answer» For a spherical mirror, the graph of 1/v versus 1/u is ?

Discussion

Explore topic-wise InterviewSolutions in .

What is the process by which a layer of one metal can be deposited on top of another metal? What kind of metals are usually electroplated? [3 MARKS]

To remove myopia a lens of power 9.66D is reqiured. The dis†an t point of eye i

What is meant by the ‘volume’ of an object?

Question 2 (a)Convert the following temperatures to the Kelvin scale. (a)25∘C

is electromagnet stronger than magnet

34. WHAT IS THE R.M.S SPEED OF A MOIST PARTICLE OF MASS 10 POWER -12 AT 27C TEMPERATURE ACCORDING TO KINETIC MOLECULAR THEORY?

The magnitude of pairs of displacement vectors are given .Which pairs of displacement vectors cannot be added to give a resul†an t vector of magnitude 13cm? 1)4cm,16cm 2)20cm,7 cm 3)1cm ,15 cm 4)6cm,8

A battery contains chemical energy and changes it into electrical energy but when it gets charged the energy going into is electrical energy. So my question is that can a battery change electrical energy into chemical energy

Name a safety device used in the electric circuit. What is the function of a safety device?

Miniature Circuit Breaker or MCB is also known as___

In the potentiometer circuit shown in figure the internal resistance of the 6 V battery is 1 ohm and the length of the wire AB is 100 cm. When AD = 60 cm the galvanometer shows no deflection. The emf of cell C is (the resistance of wire AB is 2 ohm)

What is Theramal powe

1L of a mixture of CO and CO2 becomes 1.6L when passed through a red hot charcoal, CO2 in the mixture

________ is the measure of hotness or coldness of a body.

imagine a light planet revolving around a very massive star in circular orbit of radius R with a period of revolution T. If tje gravitational force of attraction between the planet and the star is proportional to R-5/2, then T² is proportional to

A plane mirror is approaching an object from a distance of 30 m with a speed of 3 m/s. Find the speed of the image as seen from the object.

Why photons doesn't get attracted by gravity ?

The average distance between the Moon and the Earth is ___ km.

What is a kaleidoscope

A body is said to be at ___ if it does not change its position with respect to the reference point.

What is speed

How does people change the colour of light artificially?

SI unit of length is:

Identify the energy conversion in an electrical cell.

Find the focal length of a mirror if the object is placed 40 cm from the pole of the mirror and the image is formed at a distance of 20 cm from the pole on the other side of the mirror. Apply sign convention and also determine the nature of the mirror.

30.Find the elecric potential at the point o due to segment of ring as shown whose linear charge density is 4 coulomb per metre

Explain the method of charging an object by friction

Harish runs faster than Suresh to cover the same distance. Which fundamental physical quantity is used for comparing their speeds?

Which of the following will allow the sound waves to travel through it?

While measuring the temperature of boiling water, sushweta found the temperature to be 85 degrees centigrade only. What can be the probable reason for this?

if H is the harmonic mean between p and q then find the value of H/p+H/q

41. Is electricity the flow of electrons?

Which among the following object is at rest?

Two objects move towards each other till they meet at a point. The speed of first object is 5 ms−1 and the speed of the second object is 10 ms−1. If the distance between the objects is 30 m initially, what is the difference between the distances travelled by the two bodies?

in a new unit system,unit of time is equal to 20 second, 1 unit of mass is 10kg and 1 unit of lenght is 5 m . in the new system of units, 1 unit of energy is equal to ?

In an electric bell, when the electromagnet pulls the iron strip, it also breaks the circuit. The current through the coil stops flowing. In this case, will the coil remain an electromagnet? How does an electric bell ring then?

Which of the following is correct with respect to elasticity?

Himanshu has two lenses A and B. When he touches both the lenses he finds that A is thicker at the centre than at the edges and B is thinner at the centre as compared to its edges. He has to focus sunlight on a particular point. Which one of them can he use?

Which of the following is true with respect to an object in periodic motion?

Why cannot we see an upside down image of the sun through the pinhole camera?

A cube with a mass m= 20g floats on the surface of water. Each face of the cube is 3cm long. what is the distance between lower surface of the cube and surface of the water? (Surface tension of water = 70 × 103 N/m)

Suppose a body ‘A’ at a higher temperature is brought into contact with another body ‘B’ at a lower temperature. Will the temperature of B increase? Explain.

A refrigerator based on carnots cycle receives heat from 227^° c and rejects heat at 727^° c . let work required per unit heat received be x . if the same machine is used as carnots engine then its efficiency is y . then ratio of x and y is

Suppose in a house there are four bulbs of 100 W each, six of 60 W each and six of 40 W each. All of them are used for two hours a day. How many units of electricity will be used up in 30 days? How much will they have to pay at Rs. 2.80 /- per unit?

450 = ___. [Enter a numerical value] ___

{ When two liquid of same volume but different densities }}_1 and }ρ_2 are mixed together, then the density of the } mixture is

On cold region, if somebody lick a metal pole its tounge get stuck to the metal pole?

Difference between microscopic physics and mesoscopic physics?

For a spherical mirror, the graph of 1/v versus 1/u is ?

450 = _. [Enter a numerical value] _