9478 + Interview Questions in Physics Page 70 InterviewSolution

3451.	What happens when a charged object is bought near our hand ?
Answer» What happens when a charged object is bought near our hand ?

Discussion

3452.	Does density increases or decreases for Zn and Cd ? Explai
Answer» Does density increases or decreases for Zn and Cd ? Explai

Discussion

3453.	156.The same horizontal force is applied to objects of different mass. Which of the graph is correct of a-m in given experiment.
Answer» 156.The same horizontal force is applied to objects of different mass. Which of the graph is correct of a-m in given experiment.

Discussion

3454.	A lightning conductor is a device which transfers: (a) electric energy (b) light energy (c) solar energy (d) photoelectric energy
Answer» A lightning conductor is a device which transfers: (a) electric energy (b) light energy (c) solar energy (d) photoelectric energy

3454.

A lightning conductor is a device which transfers: (a) electric energy (b) light energy (c) solar energy (d) photoelectric energy

Answer»

A lightning conductor is a device which transfers:

(a) electric energy (b) light energy

(c) solar energy (d) photoelectric energy

Discussion

3455.	A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad (Ignore the frictional force due to air resistance).
Answer» A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad (Ignore the frictional force due to air resistance).

Discussion

3456.	18. At a certain temperature KP for dissociation of solid CaCO3 is 4 102 atm and for the second reaction C(s) + CO2(g) = 2CO(g) is 2 atm. Partial pressure of CO at this temperature if both equilibrium are established in same container (1) 0.28 (2) 0.08 (3) 0.96 (4) 0.68
Answer» 18. At a certain temperature KP for dissociation of solid CaCO3 is 4 102 atm and for the second reaction C(s) + CO2(g) = 2CO(g) is 2 atm. Partial pressure of CO at this temperature if both equilibrium are established in same container (1) 0.28 (2) 0.08 (3) 0.96 (4) 0.68

Discussion

3457.	how to find no of reflections between two parallel plane mirrors seperated by a dis†an ce.Length of both mirrors are same and first incident light is at edge of one of the mirror
Answer» how to find no of reflections between two parallel plane mirrors seperated by a dis†an ce.Length of both mirrors are same and first incident light is at edge of one of the mirror

Discussion

3458.	when a light ray moves from rarer medium to denser medium , why it bends toward the norwal instead of going apart from normal .
Answer» when a light ray moves from rarer medium to denser medium , why it bends toward the norwal instead of going apart from normal .

Discussion

3459.	What causes lightning?
Answer» What causes lightning?

Discussion

3460.	Statement 1: Dynamo is used to generate electricity in thermal power plant,hydro power plant and wind energy plant. Statement 2: Dynamo converts Mechanical energy from turbine to electrical energy.
Answer» Statement 1: Dynamo is used to generate electricity in thermal power plant,hydro power plant and wind energy plant. Statement 2: Dynamo converts Mechanical energy from turbine to electrical energy.

3460.

Statement 1: Dynamo is used to generate electricity in thermal power plant,hydro power plant and wind energy plant. Statement 2: Dynamo converts Mechanical energy from turbine to electrical energy.

Answer»

Statement 1: Dynamo is used to generate electricity in thermal power plant,hydro power plant and wind energy plant.

Statement 2: Dynamo converts Mechanical energy from turbine to electrical energy.

Discussion

3461.	Can a rubber sucker be stuck on a rough surface?
Answer» Can a rubber sucker be stuck on a rough surface?

Discussion

3462.	The wavelength of a sound wave is 3 cm and speed of sound is 340 ms−1. Will it be audible? [2 MARKS]
Answer» The wavelength of a sound wave is 3 cm and speed of sound is 340 $m s^{- 1}$ . Will it be audible? [2 MARKS]

Discussion

3463.	does racemisation takes place in arsn reaction?
Answer» does racemisation takes place in arsn reaction?

Discussion

3464.	A little boy was playing tug of war with his elder brother; he tried everything but was unsuccessful in pulling the rope towards himself. Eventually, the little boy lost the game because:-Statement1: Elder brother was capable of applying a greater force than his younger brother and hence the net force was in a direction to make him win.Statement2: An object moves in the direction of the net force acting on it.
Answer» A little boy was playing tug of war with his elder brother; he tried everything but was unsuccessful in pulling the rope towards himself. Eventually, the little boy lost the game because:- Statement1: Elder brother was capable of applying a greater force than his younger brother and hence the net force was in a direction to make him win. Statement2: An object moves in the direction of the net force acting on it.

3464.

A little boy was playing tug of war with his elder brother; he tried everything but was unsuccessful in pulling the rope towards himself. Eventually, the little boy lost the game because:-Statement1: Elder brother was capable of applying a greater force than his younger brother and hence the net force was in a direction to make him win.Statement2: An object moves in the direction of the net force acting on it.

Answer»

A little boy was playing tug of war with his elder brother; he tried everything but was unsuccessful in pulling the rope towards himself. Eventually, the little boy lost the game because:-

Statement1: Elder brother was capable of applying a greater force than his younger brother and hence the net force was in a direction to make him win.

Statement2: An object moves in the direction of the net force acting on it.

Discussion

3465.	Sushweta has to send a laser signal to Garima. But she finds out that the signal misses Garima by 40. She asks Himanshu to rotate the mirror. By what angle should Himanshu rotate the mirror so that the signal reaches to Garima? (Himanshu is standing in front of Sushweta and Garima and both of them are on the right and left side of Himanshu respectively )
Answer» Sushweta has to send a laser signal to Garima. But she finds out that the signal misses Garima by $4^{0}$ . She asks Himanshu to rotate the mirror. By what angle should Himanshu rotate the mirror so that the signal reaches to Garima? (Himanshu is standing in front of Sushweta and Garima and both of them are on the right and left side of Himanshu respectively )

3465.

Sushweta has to send a laser signal to Garima. But she finds out that the signal misses Garima by 40. She asks Himanshu to rotate the mirror. By what angle should Himanshu rotate the mirror so that the signal reaches to Garima? (Himanshu is standing in front of Sushweta and Garima and both of them are on the right and left side of Himanshu respectively )

Answer»

Sushweta has to send a laser signal to Garima. But she finds out that the signal misses Garima by $4^{0}$ . She asks Himanshu to rotate the mirror.

By what angle should Himanshu rotate the mirror so that the signal reaches to Garima? (Himanshu is standing in front of Sushweta and Garima and both of them are on the right and left side of Himanshu respectively )

Discussion

3466.	A neutral electroscope is touched with a negatively charged rod. What is the charge on the electroscope after the rod is removed?
Answer» A neutral electroscope is touched with a negatively charged rod. What is the charge on the electroscope after the rod is removed?

Discussion

3467.	Question 31You are provided with three watch glasses containing milk, petrol and mustard oil, respectively. Suppose you bring a burning candle near these materials one by one, which material(s) will catch fire instantly and why?
Answer» Question 31 You are provided with three watch glasses containing milk, petrol and mustard oil, respectively. Suppose you bring a burning candle near these materials one by one, which material(s) will catch fire instantly and why?

Discussion

3468.	What is the conventional direction of electric current? How does it differ from the direction of flow of electrons?
Answer» What is the conventional direction of electric current? How does it differ from the direction of flow of electrons?

Discussion

3469.	Which of the following statement is correct regarding distance and displacement?
Answer» Which of the following statement is correct regarding distance and displacement?

Discussion

3470.	Question 4 Fig. shows a container filled with water. Which of the following statements is correct about pressure of water? (a) Pressure at A> Pressure at B> Pressure at C (b) Pressure at A=Pressure at B=Pressure at C (c) Pressure at A< Pressure at B>Pressure at C (d) Pressure at A< Pressure at B<Pressure at C
Answer» Question 4 Fig. shows a container filled with water. Which of the following statements is correct about pressure of water? (a) Pressure at A> Pressure at B> Pressure at C (b) Pressure at A=Pressure at B=Pressure at C (c) Pressure at A< Pressure at B>Pressure at C (d) Pressure at A< Pressure at B<Pressure at C

Discussion

3471.	86.A charge Q is placed at the centre of face AFGH of a cube. Let flux passing through surface BCDE is phi. then flux through the face ABCH, will be
Answer» 86.A charge Q is placed at the centre of face AFGH of a cube. Let flux passing through surface BCDE is phi. then flux through the face ABCH, will be

Discussion

3472.	A 1000 kg engine pulls a train of 4 wagons each of 2500 kg along a a horizontal railway track. if the exerts a force of 50000 N on wagons and track offers force of friction 2500 N on each wagon, then calculate the force of wagon-1 on wagon-2.
Answer» A 1000 kg engine pulls a train of 4 wagons each of 2500 kg along a a horizontal railway track. if the exerts a force of 50000 N on wagons and track offers force of friction 2500 N on each wagon, then calculate the force of wagon-1 on wagon-2.

Discussion

3473.	What is gear. Explain in simple terms.
Answer» What is gear. Explain in simple terms.

Discussion

3474.	What is muscular force ? Give one example of muscular force.
Answer» What is muscular force ? Give one example of muscular force.

Discussion

3475.	Answer the following: A. Why friction is called a necessary evil? B. Explain why objects moving in fluids must have a special shape? [5 MARKS]
Answer» Answer the following: A. Why friction is called a necessary evil? B. Explain why objects moving in fluids must have a special shape? [5 MARKS]

Discussion

3476.	How many images are formed for a point object kept in between the two plane mirrors at right angles to each other ? Show them by drawing a ray diagram.
Answer» How many images are formed for a point object kept in between the two plane mirrors at right angles to each other ? Show them by drawing a ray diagram.

Discussion

3477.	Derive the flexibility matrix for the simple beam of span L and flexural rigidity EI shown in figure subjected to end moments M1 and M2
Answer» Derive the flexibility matrix for the simple beam of span L and flexural rigidity EI shown in figure subjected to end moments $M_{1} a n d M_{2}$

Discussion

3478.	26.What wiil be velocity of object at 4 sec if at 1 sec its velocity is 5 m/s and acceleration is variable a=2t+1
Answer» 26.What wiil be velocity of object at 4 sec if at 1 sec its velocity is 5 m/s and acceleration is variable a=2t+1

Discussion

3479.	Induction Cooktops works on the principle of:1)Conduction of Heat2)Electromagnetic Induction3)Radiation of Heat4)Ionisation
Answer» Induction Cooktops works on the principle of: 1)Conduction of Heat 2)Electromagnetic Induction 3)Radiation of Heat 4)Ionisation

Discussion

3480.	work done in moving a charge q coulomb on the surface of a given charged conductor of potential V i
Answer» work done in moving a charge q coulomb on the surface of a given charged conductor of potential V i

Discussion

3481.	A body of density d floats half immersed in a liquid. Will a body of same dimension but density 2d float in it?
Answer» A body of density d floats half immersed in a liquid. Will a body of same dimension but density 2d float in it?

Discussion

3482.	The source of water for wells is
Answer» The source of water for wells is

Discussion

3483.	An electric iron of power 3.0 kW is used for 60 minutes to press the clothes. Calculate the energy consumed in the kilowatt hour.
Answer» An electric iron of power 3.0 kW is used for 60 minutes to press the clothes. Calculate the energy consumed in the kilowatt hour.

Discussion

3484.	difference bw interparticle spaces ,interparticle force of attraction and particle motion
Answer» difference bw interparticle spaces ,interparticle force of attraction and particle motion

Discussion

3485.	TWO POINT MASSES 2M AND M ARE SEPARATED BY DISTANCE D ARE REVOLVING UNDER MUTUAL FORCE OF ATTRACTION ABOUT THEIR C.M. THE RATIO OF THEIR ANGULAR SPEED
Answer» TWO POINT MASSES 2M AND M ARE SEPARATED BY DISTANCE D ARE REVOLVING UNDER MUTUAL FORCE OF ATTRACTION ABOUT THEIR C.M. THE RATIO OF THEIR ANGULAR SPEED

Discussion

3486.	In electrolysis process cations (+ve ions) migrate towards___
Answer» In electrolysis process cations (+ve ions) migrate towards___

Discussion

3487.	Find the electrostatic force on a charged particle of 1C charge located at a point P(1, 2, 3) due to another charge 2C located at point Q(2, 3, 4) in the cartesian coordinate system. (K=14πϵ0)
Answer» Find the electrostatic force on a charged particle of $1 C$ charge located at a point $P(1, 2, 3)$ due to another charge $2 C$ located at point $Q(2, 3, 4)$ in the cartesian coordinate system. $(K = \frac{1}{4 π ϵ_{0}})$

Discussion

3488.	Which chatacteristics of Mars distinguishes it from other planets?
Answer» Which chatacteristics of Mars distinguishes it from other planets?

Discussion

3489.	Name a device which is used to measure force acting on an object.
Answer» Name a device which is used to measure force acting on an object.

Discussion

3490.	For a floating body, how is its weight related to the buoyant force?
Answer» For a floating body, how is its weight related to the buoyant force?

Discussion

3491.	If the image of a stone placed infront of a mirror is seen by the observer 1 at position C, then where will the observer 2 see the image?
Answer» If the image of a stone placed infront of a mirror is seen by the observer 1 at position C, then where will the observer 2 see the image?

Discussion

3492.	11. A ball is released from the top of this smooth vertical tube the angle made by the ball with vertical when it just leaves the contact from the inner surface of the tube.
Answer» 11. A ball is released from the top of this smooth vertical tube the angle made by the ball with vertical when it just leaves the contact from the inner surface of the tube.

Discussion

3493.	A fork P of unknown frequency gives six beats per second when sounded with another fork Q of frequency 260 Hz. The fork P is now loaded with a piece of wax and again six beats per second is heard, then frequency of fork P is
Answer» A fork $P$ of unknown frequency gives six beats per second when sounded with another fork $Q$ of frequency $260 Hz$ . The fork $P$ is now loaded with a piece of wax and again six beats per second is heard, then frequency of fork $P$ is

Discussion

3494.	Why the volume of water displaced =volume of an irregular shaped which is dip in water?
Answer» Why the volume of water displaced =volume of an irregular shaped which is dip in water?

Discussion

3495.	Name the Indians worked at NASA.
Answer» Name the Indians worked at NASA.

Discussion

3496.	40. A source of sound gives 5beats per second when sounded with another sourse of frequency 100Hz.the second harmonic of the sourse together with a sourse of frequency 205Hz gives 5 beats/second. what is the freequency of the source?
Answer» 40. A source of sound gives 5beats per second when sounded with another sourse of frequency 100Hz.the second harmonic of the sourse together with a sourse of frequency 205Hz gives 5 beats/second. what is the freequency of the source?

Discussion

3497.	Question 3Why don't two magnetic lines of force intersect each other?
Answer» Question 3 Why don't two magnetic lines of force intersect each other?

Discussion

3498.	In a thermodynamics process, pressure of a fixedmass of gas is changed in such a manner that the gas releases 30 joule of heatand 18 joule of work was done on the gas. If the initial internal energy of thegas was 60 joule, then the final internal energy will be
Answer» In a thermodynamics process, pressure of a fixed mass of gas is changed in such a manner that the gas releases 30 joule of heat and 18 joule of work was done on the gas. If the initial internal energy of the gas was 60 joule, then the final internal energy will be

Discussion

3499.	A cylindrical vessel of height 500mm has an orifice at its bottom .the orifice is initially closed and water is filled in it up to a height h .now the top is completely filled with the cap and orifice at the bottom is opened. Some water comes out from the orifice and water level in the vessel becomes steady with height of water column being 200 mm .find the fall in height of water level due to opening of orifice. Neglect surface tension and take the standard values of atmospheric pressure density of water and gravity due to Earth
Answer» A cylindrical vessel of height 500mm has an orifice at its bottom .the orifice is initially closed and water is filled in it up to a height h .now the top is completely filled with the cap and orifice at the bottom is opened. Some water comes out from the orifice and water level in the vessel becomes steady with height of water column being 200 mm .find the fall in height of water level due to opening of orifice. Neglect surface tension and take the standard values of atmospheric pressure density of water and gravity due to Earth

Discussion

3500.	There are 2 charges 4 microcolum +8 microcolum supparated by 27cm.fine where the potential is 0 on line join the 2 charges from -4 microcolum
Answer» There are 2 charges 4 microcolum +8 microcolum supparated by 27cm.fine where the potential is 0 on line join the 2 charges from -4 microcolum

Discussion

Explore topic-wise InterviewSolutions in .

What happens when a charged object is bought near our hand ?

Does density increases or decreases for Zn and Cd ? Explai

156.The same horizontal force is applied to objects of different mass. Which of the graph is correct of a-m in given experiment.

A lightning conductor is a device which transfers: (a) electric energy (b) light energy (c) solar energy (d) photoelectric energy

A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad (Ignore the frictional force due to air resistance).

18. At a certain temperature KP for dissociation of solid CaCO3 is 4 102 atm and for the second reaction C(s) + CO2(g) = 2CO(g) is 2 atm. Partial pressure of CO at this temperature if both equilibrium are established in same container (1) 0.28 (2) 0.08 (3) 0.96 (4) 0.68

how to find no of reflections between two parallel plane mirrors seperated by a dis†an ce.Length of both mirrors are same and first incident light is at edge of one of the mirror

when a light ray moves from rarer medium to denser medium , why it bends toward the norwal instead of going apart from normal .

What causes lightning?

Statement 1: Dynamo is used to generate electricity in thermal power plant,hydro power plant and wind energy plant. Statement 2: Dynamo converts Mechanical energy from turbine to electrical energy.

Can a rubber sucker be stuck on a rough surface?

The wavelength of a sound wave is 3 cm and speed of sound is 340 ms−1. Will it be audible? [2 MARKS]

does racemisation takes place in arsn reaction?

A neutral electroscope is touched with a negatively charged rod. What is the charge on the electroscope after the rod is removed?

Question 31You are provided with three watch glasses containing milk, petrol and mustard oil, respectively. Suppose you bring a burning candle near these materials one by one, which material(s) will catch fire instantly and why?

What is the conventional direction of electric current? How does it differ from the direction of flow of electrons?

Which of the following statement is correct regarding distance and displacement?

86.A charge Q is placed at the centre of face AFGH of a cube. Let flux passing through surface BCDE is phi. then flux through the face ABCH, will be

A 1000 kg engine pulls a train of 4 wagons each of 2500 kg along a a horizontal railway track. if the exerts a force of 50000 N on wagons and track offers force of friction 2500 N on each wagon, then calculate the force of wagon-1 on wagon-2.

What is gear. Explain in simple terms.

What is muscular force ? Give one example of muscular force.

Answer the following: A. Why friction is called a necessary evil? B. Explain why objects moving in fluids must have a special shape? [5 MARKS]

How many images are formed for a point object kept in between the two plane mirrors at right angles to each other ? Show them by drawing a ray diagram.

Derive the flexibility matrix for the simple beam of span L and flexural rigidity EI shown in figure subjected to end moments M1 and M2

26.What wiil be velocity of object at 4 sec if at 1 sec its velocity is 5 m/s and acceleration is variable a=2t+1

Induction Cooktops works on the principle of:1)Conduction of Heat2)Electromagnetic Induction3)Radiation of Heat4)Ionisation

work done in moving a charge q coulomb on the surface of a given charged conductor of potential V i

A body of density d floats half immersed in a liquid. Will a body of same dimension but density 2d float in it?

The source of water for wells is

An electric iron of power 3.0 kW is used for 60 minutes to press the clothes. Calculate the energy consumed in the kilowatt hour.

difference bw interparticle spaces ,interparticle force of attraction and particle motion

TWO POINT MASSES 2M AND M ARE SEPARATED BY DISTANCE D ARE REVOLVING UNDER MUTUAL FORCE OF ATTRACTION ABOUT THEIR C.M. THE RATIO OF THEIR ANGULAR SPEED

In electrolysis process cations (+ve ions) migrate towards___

Find the electrostatic force on a charged particle of 1C charge located at a point P(1, 2, 3) due to another charge 2C located at point Q(2, 3, 4) in the cartesian coordinate system. (K=14πϵ0)

Which chatacteristics of Mars distinguishes it from other planets?

Name a device which is used to measure force acting on an object.

For a floating body, how is its weight related to the buoyant force?

If the image of a stone placed infront of a mirror is seen by the observer 1 at position C, then where will the observer 2 see the image?

11. A ball is released from the top of this smooth vertical tube the angle made by the ball with vertical when it just leaves the contact from the inner surface of the tube.

A fork P of unknown frequency gives six beats per second when sounded with another fork Q of frequency 260 Hz. The fork P is now loaded with a piece of wax and again six beats per second is heard, then frequency of fork P is

Why the volume of water displaced =volume of an irregular shaped which is dip in water?

Name the Indians worked at NASA.

40. A source of sound gives 5beats per second when sounded with another sourse of frequency 100Hz.the second harmonic of the sourse together with a sourse of frequency 205Hz gives 5 beats/second. what is the freequency of the source?

Question 3Why don't two magnetic lines of force intersect each other?

In a thermodynamics process, pressure of a fixedmass of gas is changed in such a manner that the gas releases 30 joule of heatand 18 joule of work was done on the gas. If the initial internal energy of thegas was 60 joule, then the final internal energy will be

There are 2 charges 4 microcolum +8 microcolum supparated by 27cm.fine where the potential is 0 on line join the 2 charges from -4 microcolum