9478 + Interview Questions in Physics Page 16 InterviewSolution

751.	Explain an application where we reduce pressure acting on a body ?
Answer» Explain an application where we reduce pressure acting on a body ?

Discussion

752.	You want the area of the platform in the tree house to be 12/5 sq yd. If the length of the platform is 4/3 yd, then the width of the platform is
Answer» You want the area of the platform in the tree house to be 12/5 sq yd. If the length of the platform is 4/3 yd, then the width of the platform is

Discussion

753.	if two charges +4c and +3c at point A and B are seprated by distace r . find eletric field at point A
Answer» if two charges +4c and +3c at point A and B are seprated by distace r . find eletric field at point A

Discussion

754.	WHAT IS NEWTON'S LAWS OF MOTION
Answer» WHAT IS NEWTON'S LAWS OF MOTION

Discussion

755.	friction is a nonconsertive force and electomagnetic force are conservative forces.but friction is also a electromagnetic force. then how is it non conservative force?
Answer» friction is a nonconsertive force and electomagnetic force are conservative forces.but friction is also a electromagnetic force. then how is it non conservative force?

Discussion

756.	for given position time equation t=alpha+beta xsquare,acceleration is proportional to
Answer» for given position time equation t=alpha+beta xsquare,acceleration is proportional to

Discussion

757.	What is frequency of a sound wave?
Answer» What is frequency of a sound wave?

Discussion

758.	Find whether these objects slide or roll.
Answer» Find whether these objects slide or roll.

Discussion

759.	nta point is selected inside a circle . the probability that it is closer to centre of circle than the circumference isn
Answer» nta point is selected inside a circle . the probability that it is closer to centre of circle than the circumference isn

Discussion

760.	An elementary profile of a gravity dam yields the following data:Specific gravity of concrete = 2.5,Coefficient of friction, μ=0.5,Height of dam= 100 m,The base width of the dam, considering no uplift, will be ___________ m.80
Answer» An elementary profile of a gravity dam yields the following data: Specific gravity of concrete = 2.5, Coefficient of friction, $μ = 0.5,$ Height of dam= 100 m, The base width of the dam, considering no uplift, will be ___________ m. 80

Discussion

761.	Tools meant for cutting and piercing always have:
Answer» Tools meant for cutting and piercing always have:

Discussion

762.	what is electric flux?
Answer» what is electric flux?

Discussion

763.	<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}-->Consider the following in context of GSLV :1. First Indian launch vehicle to be equipped with cryogenic stage.2. GSLV is three stages vehicle with solid, liquid and cryogenic stages respectively.3. 2nd stage is powered by the Vikas engine..Select the correct statement:
Answer» <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Consider the following in context of GSLV : 1. First Indian launch vehicle to be equipped with cryogenic stage. 2. GSLV is three stages vehicle with solid, liquid and cryogenic stages respectively. 3. 2nd stage is powered by the Vikas engine.. Select the correct statement:

Discussion

764.	Dear sir/Ma'am I have a problem in solving this question Q.State true or false 1.A charged body attract or repel an uncharged body.
Answer» Dear sir/Ma'am I have a problem in solving this question Q.State true or false 1.A charged body attract or repel an uncharged body.

Discussion

765.	Analyze the given statements and choose the correct option: Statement1: If a glass rod is rubbed with silk cloth it acquires positive charge. Statement2: A body acquires a positive charge when electrons are removed from it.
Answer» Analyze the given statements and choose the correct option: Statement1: If a glass rod is rubbed with silk cloth it acquires positive charge. Statement2: A body acquires a positive charge when electrons are removed from it.

Discussion

766.	A spherical ball contracts in volume by 0.01%when subjected to a normal uniform pressuref100 atm. The Bulk modulus of its material is(1) 1.01 x 1011 Nm2 (2) 1.01 x 1012 Nm2(3) 1.01 x 1010 Nm2 (4) 1.0 x 1013 Nm2
Answer» A spherical ball contracts in volume by 0.01%when subjected to a normal uniform pressuref100 atm. The Bulk modulus of its material is(1) 1.01 x 1011 Nm2 (2) 1.01 x 1012 Nm2(3) 1.01 x 1010 Nm2 (4) 1.0 x 1013 Nm2

Discussion

767.	A skater of mass m standing on ice throws a stone of mass M with a velocity of v m/s in a horizontal direction. Find the distance over which the skater will move back if the coefficient of friction between the skaters and the ice is m.
Answer» A skater of mass m standing on ice throws a stone of mass M with a velocity of v m/s in a horizontal direction. Find the distance over which the skater will move back if the coefficient of friction between the skaters and the ice is m.

Discussion

768.	Which medium has brought the world closer to us?
Answer» Which medium has brought the world closer to us?

Discussion

769.	A microphone is connected to the Y-input of a C.R.O. Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produced on the screen are shown in the figure. (i) Which trace is due to the loudest sound? Give reason for your answer. (ii) Which trace is due to the sound with the lowest pitch? Explain your answer.
Answer» A microphone is connected to the Y-input of a C.R.O. Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produced on the screen are shown in the figure. (i) Which trace is due to the loudest sound? Give reason for your answer. (ii) Which trace is due to the sound with the lowest pitch? Explain your answer.

769.

A microphone is connected to the Y-input of a C.R.O. Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produced on the screen are shown in the figure. (i) Which trace is due to the loudest sound? Give reason for your answer. (ii) Which trace is due to the sound with the lowest pitch? Explain your answer.

Answer»

A microphone is connected to the Y-input of a C.R.O. Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produced on the screen are shown in the figure.

(i) Which trace is due to the loudest sound? Give reason for your answer.

(ii) Which trace is due to the sound with the lowest pitch? Explain your answer.

Discussion

770.	Match the following sounds with their suitable decibels.
Answer» Match the following sounds with their suitable decibels.

Discussion

771.	Would thebulb glow after completing the circuit shown in Fig. 12.14, if we usean eraser instead of a safety pin?
Answer» Would the bulb glow after completing the circuit shown in Fig. 12.14, if we use an eraser instead of a safety pin?

771.

Would thebulb glow after completing the circuit shown in Fig. 12.14, if we usean eraser instead of a safety pin?

Answer»

Would the
bulb glow after completing the circuit shown in Fig. 12.14, if we use
an eraser instead of a safety pin?

Discussion

772.	The Vividh Bharati station of All India Radio, Delhi, broadcast on a frequency of 1,368 kHz. Calculate the wavelength of the electromagnetic spectrum it belongs to
Answer» The Vividh Bharati station of All India Radio, Delhi, broadcast on a frequency of 1,368 kHz. Calculate the wavelength of the electromagnetic spectrum it belongs to

Discussion

773.	What's friction
Answer» What's friction

Discussion

774.	A plane mirror is placed at bottom of tank containing a liquid of refractive index μ. Height h above the mirror, an object is placed. An observer outside the tank see point P and its image. Find apparent distance between these two.
Answer» A plane mirror is placed at bottom of tank containing a liquid of refractive index μ. Height h above the mirror, an object is placed. An observer outside the tank see point P and its image. Find apparent distance between these two.

Discussion

775.	a wheel has angular acceleration of 3 rad/s2 and an initial angular speed of 2rad/s. in a time of 2s it has rotated through an angle of
Answer» a wheel has angular acceleration of 3 rad/s2 and an initial angular speed of 2rad/s. in a time of 2s it has rotated through an angle of

Discussion

776.	For the frame shown below, the value of stiffness coefficient k22 is ________.
Answer» For the frame shown below, the value of stiffness coefficient $k_{22}$ is ________.

Discussion

777.	If two objects attract each other, which is NOT a possible explanation?
Answer» If two objects attract each other, which is NOT a possible explanation?

Discussion

778.	Question 10When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to(a) pressure of water(b) gravity of the earth(c) shape of rubber bulb(d) atmospheric pressure
Answer» Question 10 When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to (a) pressure of water (b) gravity of the earth (c) shape of rubber bulb (d) atmospheric pressure

Discussion

779.	3×10^8 is speed of light in vacum or in air because we studied that it is speed of light in air
Answer» 3×10^8 is speed of light in vacum or in air because we studied that it is speed of light in air

Discussion

780.	km/h2 is a unit of
Answer» $k m / h^{2}$ is a unit of

Discussion

781.	Which kind of magnet can be stronger than a permanent magnet?
Answer» Which kind of magnet can be stronger than a permanent magnet?

Discussion

782.	Sheela, Saima, and Ravi have to dissolve the maximum amount of sugar in the same amount of milk so as to win in a game. Ravi took hot boiling milk while Saima took ice-cold milk. Sheela managed to get milk at room temperature. Who do you think would win the game and why?
Answer» Sheela, Saima, and Ravi have to dissolve the maximum amount of sugar in the same amount of milk so as to win in a game. Ravi took hot boiling milk while Saima took ice-cold milk. Sheela managed to get milk at room temperature. Who do you think would win the game and why?

Discussion

783.	A force of 10 N is applied on a body of surface area 5 m2. Calculate the pressure exerted (in Pa) on the body.2
Answer» A force of 10 N is applied on a body of surface area 5 $m^{2}$ . Calculate the pressure exerted (in Pa) on the body. 2

Discussion

784.	What kind of electric charge is acquired: (a) by a glass rod rubbed with silk cloth? (b) by a plastic comb rubbed with dry hair?
Answer» What kind of electric charge is acquired: (a) by a glass rod rubbed with silk cloth? (b) by a plastic comb rubbed with dry hair?

784.

What kind of electric charge is acquired: (a) by a glass rod rubbed with silk cloth? (b) by a plastic comb rubbed with dry hair?

Answer»

What kind of electric charge is acquired:

(a) by a glass rod rubbed with silk cloth?

(b) by a plastic comb rubbed with dry hair?

Discussion

785.	What is gravity constant
Answer» What is gravity constant

Discussion

786.	Why electric field of dipole is inverse of cube of distance?
Answer» Why electric field of dipole is inverse of cube of distance?

Discussion

787.	A body of mass 40 gram is moving with a constant velocity of 2 centimetre per second on a horizontal frictionless table the force on the table is
Answer» A body of mass 40 gram is moving with a constant velocity of 2 centimetre per second on a horizontal frictionless table the force on the table is

Discussion

788.	What magnitudes of earthquakes on Richter scale are considered destructive?
Answer» What magnitudes of earthquakes on Richter scale are considered destructive?

Discussion

789.	Friction is a type of:
Answer» Friction is a type of:

Discussion

790.	What is the direction of drag when a plane is flying from Bangalore to Delhi? Why? [2 MARKS]
Answer» What is the direction of drag when a plane is flying from Bangalore to Delhi? Why? [2 MARKS]

Discussion

791.	A particle is performing circular motion in a circle ofradius R in such a way that at every momentmagnitude of its tangential and radial acceleration isequal. If initial velocity of particle is va then time periodof 1st revolution is
Answer» A particle is performing circular motion in a circle ofradius R in such a way that at every momentmagnitude of its tangential and radial acceleration isequal. If initial velocity of particle is va then time periodof 1st revolution is

Discussion

792.	Question 2 Boojho and Paheli performed experiments taking similar bulbs and cells but two different solutions A and B as shown in Fig. They found that the bulb in the setup A glows more brightly as compared to that of the setup B. You would conclude that (a) Higher current is flowing through the circuit in setup A. (b) Higher current is flowing through the circuit in setup B. (c) Equal current is flowing through both the circuits. (d) The current flowing through the circuits in the two setups cannot be compared in this manner.
Answer» Question 2 Boojho and Paheli performed experiments taking similar bulbs and cells but two different solutions A and B as shown in Fig. They found that the bulb in the setup A glows more brightly as compared to that of the setup B. You would conclude that (a) Higher current is flowing through the circuit in setup A. (b) Higher current is flowing through the circuit in setup B. (c) Equal current is flowing through both the circuits. (d) The current flowing through the circuits in the two setups cannot be compared in this manner.

Discussion

793.	A few natural phenomena are given below. Identify the correct phenomenon in which the process of electric discharge occurs.
Answer» A few natural phenomena are given below. Identify the correct phenomenon in which the process of electric discharge occurs.

Discussion

794.	HEAT CONDUCTION: Three rods of the same cross-section and made of the same material form the sides of a triangle ABC. The points A and B are maintained at temperatures T and Root(2)*T respectively in the steady state. Assuming that only heat conduction takes place, the temperature at point C is? [angle A=60^°, angle B=90^°]
Answer» HEAT CONDUCTION: Three rods of the same cross-section and made of the same material form the sides of a triangle ABC. The points A and B are maintained at temperatures T and Root(2)*T respectively in the steady state. Assuming that only heat conduction takes place, the temperature at point C is? [angle A=60^°, angle B=90^°]

Discussion

795.	according to newtons first law of motion an object tends to remain at rest until and unless an externalmforce acts on it so suppose a dog is sleeping and suddenlynit wakes up and start moving so here no external force is acting on it so how does the dog comes in motion
Answer» according to newtons first law of motion an object tends to remain at rest until and unless an externalmforce acts on it so suppose a dog is sleeping and suddenlynit wakes up and start moving so here no external force is acting on it so how does the dog comes in motion

Discussion

796.	A wall reflects light and a mirror also reflects light. What difference is there in the way they reflect light?
Answer» A wall reflects light and a mirror also reflects light. What difference is there in the way they reflect light?

Discussion

797.	How can we identify that which liquid is a electrolyte
Answer» How can we identify that which liquid is a electrolyte

Discussion

798.	Consider the statements regarding different types of plate’s boundary interaction: 1. Destructive plate boundary is one in which continuous upwelling of molten material ie lava takes place. 2. Constructive plate boundary is one which two plates slide past one another thus neither creating nor destroying continental landmass. 3. Convergent plate boundary is one in which one plate overrides the other plate. Choose the correct statement/s from the following code.
Answer» Consider the statements regarding different types of plate’s boundary interaction: 1. Destructive plate boundary is one in which continuous upwelling of molten material ie lava takes place. 2. Constructive plate boundary is one which two plates slide past one another thus neither creating nor destroying continental landmass. 3. Convergent plate boundary is one in which one plate overrides the other plate. Choose the correct statement/s from the following code.

798.

Consider the statements regarding different types of plate’s boundary interaction: 1. Destructive plate boundary is one in which continuous upwelling of molten material ie lava takes place. 2. Constructive plate boundary is one which two plates slide past one another thus neither creating nor destroying continental landmass. 3. Convergent plate boundary is one in which one plate overrides the other plate. Choose the correct statement/s from the following code.

Answer»

Consider the statements regarding different types of plate’s boundary interaction:

1. Destructive plate boundary is one in which continuous upwelling of molten material ie lava takes place.

2. Constructive plate boundary is one which two plates slide past one another thus neither creating nor destroying continental landmass.

3. Convergent plate boundary is one in which one plate overrides the other plate.

Choose the correct statement/s from the following code.

Discussion

799.	hail storms are observed to strike the surface of the frozen lake at 30^° with the vertiocal and rebound at 60^° with the vertical.assume contact to be smooth , the coefficient of restitution is
Answer» hail storms are observed to strike the surface of the frozen lake at 30^° with the vertiocal and rebound at 60^° with the vertical.assume contact to be smooth , the coefficient of restitution is

Discussion

800.	Write the angle between the vectors a→×b→ and b→×a→.
Answer» Write the angle between the vectors $\vec{a} \times \vec{b}$ and $\vec{b} \times \vec{a}$ .

Discussion

Explore topic-wise InterviewSolutions in .

Explain an application where we reduce pressure acting on a body ?

You want the area of the platform in the tree house to be 12/5 sq yd. If the length of the platform is 4/3 yd, then the width of the platform is

if two charges +4c and +3c at point A and B are seprated by distace r . find eletric field at point A

WHAT IS NEWTON'S LAWS OF MOTION

friction is a nonconsertive force and electomagnetic force are conservative forces.but friction is also a electromagnetic force. then how is it non conservative force?

for given position time equation t=alpha+beta xsquare,acceleration is proportional to

What is frequency of a sound wave?

Find whether these objects slide or roll.

nta point is selected inside a circle . the probability that it is closer to centre of circle than the circumference isn

An elementary profile of a gravity dam yields the following data:Specific gravity of concrete = 2.5,Coefficient of friction, μ=0.5,Height of dam= 100 m,The base width of the dam, considering no uplift, will be ___________ m.80

Tools meant for cutting and piercing always have:

what is electric flux?

Dear sir/Ma'am I have a problem in solving this question Q.State true or false 1.A charged body attract or repel an uncharged body.

Analyze the given statements and choose the correct option: Statement1: If a glass rod is rubbed with silk cloth it acquires positive charge. Statement2: A body acquires a positive charge when electrons are removed from it.

A spherical ball contracts in volume by 0.01%when subjected to a normal uniform pressuref100 atm. The Bulk modulus of its material is(1) 1.01 x 1011 Nm2 (2) 1.01 x 1012 Nm2(3) 1.01 x 1010 Nm2 (4) 1.0 x 1013 Nm2

A skater of mass m standing on ice throws a stone of mass M with a velocity of v m/s in a horizontal direction. Find the distance over which the skater will move back if the coefficient of friction between the skaters and the ice is m.

Which medium has brought the world closer to us?

Match the following sounds with their suitable decibels.

Would thebulb glow after completing the circuit shown in Fig. 12.14, if we usean eraser instead of a safety pin?

The Vividh Bharati station of All India Radio, Delhi, broadcast on a frequency of 1,368 kHz. Calculate the wavelength of the electromagnetic spectrum it belongs to

What's friction

A plane mirror is placed at bottom of tank containing a liquid of refractive index μ. Height h above the mirror, an object is placed. An observer outside the tank see point P and its image. Find apparent distance between these two.

a wheel has angular acceleration of 3 rad/s2 and an initial angular speed of 2rad/s. in a time of 2s it has rotated through an angle of

For the frame shown below, the value of stiffness coefficient k22 is ________.

If two objects attract each other, which is NOT a possible explanation?

3×10^8 is speed of light in vacum or in air because we studied that it is speed of light in air

km/h2 is a unit of

Which kind of magnet can be stronger than a permanent magnet?

Sheela, Saima, and Ravi have to dissolve the maximum amount of sugar in the same amount of milk so as to win in a game. Ravi took hot boiling milk while Saima took ice-cold milk. Sheela managed to get milk at room temperature. Who do you think would win the game and why?​

A force of 10 N is applied on a body of surface area 5 m2. Calculate the pressure exerted (in Pa) on the body.2

What kind of electric charge is acquired: (a) by a glass rod rubbed with silk cloth? (b) by a plastic comb rubbed with dry hair?

What is gravity constant

Why electric field of dipole is inverse of cube of distance?

A body of mass 40 gram is moving with a constant velocity of 2 centimetre per second on a horizontal frictionless table the force on the table is

What magnitudes of earthquakes on Richter scale are considered destructive?

Friction is a type of:

What is the direction of drag when a plane is flying from Bangalore to Delhi? Why? [2 MARKS]

A particle is performing circular motion in a circle ofradius R in such a way that at every momentmagnitude of its tangential and radial acceleration isequal. If initial velocity of particle is va then time periodof 1st revolution is

A few natural phenomena are given below. Identify the correct phenomenon in which the process of electric discharge occurs.

according to newtons first law of motion an object tends to remain at rest until and unless an externalmforce acts on it so suppose a dog is sleeping and suddenlynit wakes up and start moving so here no external force is acting on it so how does the dog comes in motion

A wall reflects light and a mirror also reflects light. What difference is there in the way they reflect light?

How can we identify that which liquid is a electrolyte

hail storms are observed to strike the surface of the frozen lake at 30^° with the vertiocal and rebound at 60^° with the vertical.assume contact to be smooth , the coefficient of restitution is

Write the angle between the vectors a→×b→ and b→×a→.

Sheela, Saima, and Ravi have to dissolve the maximum amount of sugar in the same amount of milk so as to win in a game. Ravi took hot boiling milk while Saima took ice-cold milk. Sheela managed to get milk at room temperature. Who do you think would win the game and why?