3752 + Interview Questions in Physics Page 34 InterviewSolution

1651.	Why don’t two magnetic field lines intersect each other?
Answer» Why don’t two magnetic field lines intersect each other?

Discussion

1652.	The given figure shows a squeezed rubber ball. Which of the following effects of force describes this activity?
Answer» The given figure shows a squeezed rubber ball. Which of the following effects of force describes this activity?

Discussion

1653.	Fig. shows comets without their tail. Show the tails of the comets at position A, B, and C. In which position will the tail be longest?
Answer» Fig. shows comets without their tail. Show the tails of the comets at position A, B, and C. In which position will the tail be longest?

Discussion

1654.	The ratio of the pole strength of two like magnetic poles is 9:1 and the distance between them is 12cm. At what point between the two poles, will the magnetic field be zero?
Answer» The ratio of the pole strength of two like magnetic poles is 9:1 and the distance between them is 12cm. At what point between the two poles, will the magnetic field be zero?

Discussion

1655.	Define the centripetal acceleration ?
Answer» Define the centripetal acceleration ?

Discussion

1656.	A car travels 30km at a uniform speed of 40 km/h and the next 30km at a uniform speed of 20km/h. Find its average speed.
Answer» A car travels 30km at a uniform speed of 40 km/h and the next 30km at a uniform speed of 20km/h. Find its average speed.

Discussion

1657.	98.What is the force between two magnet
Answer» 98.What is the force between two magnet

Discussion

1658.	In which direction do gravitational force and frictional force act?
Answer» In which direction do gravitational force and frictional force act?

Discussion

1659.	can work done by friction ever be positive?
Answer» can work done by friction ever be positive?

Discussion

1660.	Question 16 A torch is placed at two different positions A and B, one by one, as shown in Fig. The shape of the shadow obtained in two positions is shown in the given Fig. Match the position of the torch and shape of the shadow of the ball.
Answer» Question 16 A torch is placed at two different positions A and B, one by one, as shown in Fig. The shape of the shadow obtained in two positions is shown in the given Fig. Match the position of the torch and shape of the shadow of the ball.

1660.

Question 16 A torch is placed at two different positions A and B, one by one, as shown in Fig. The shape of the shadow obtained in two positions is shown in the given Fig. Match the position of the torch and shape of the shadow of the ball.

Answer»

Question 16

A torch is placed at two different positions A and B, one by one, as shown in Fig.

The shape of the shadow obtained in two positions is shown in the given Fig.

Match the position of the torch and shape of the shadow of the ball.

Discussion

1661.	When the north pole of a bar magnet is brought near the north pole of a freely suspended magnetic needle, it will ______.
Answer» When the north pole of a bar magnet is brought near the north pole of a freely suspended magnetic needle, it will ______.

Discussion

1662.	Why is an electric cell needed in an electric circuit?
Answer» Why is an electric cell needed in an electric circuit?

Discussion

1663.	In __________motion, an object travels through the points in equidistant from a center point.
Answer» In __________motion, an object travels through the points in equidistant from a center point.

Discussion

1664.	Will the bulb glow in the circuit shown in Fig.? Explain. What can be done to light the bulb? [5 MARKS]
Answer» Will the bulb glow in the circuit shown in Fig.? Explain. What can be done to light the bulb? [5 MARKS]

Discussion

1665.	What is plane mirror
Answer» What is plane mirror

Discussion

1666.	Which of the following involves the application of a force?
Answer» Which of the following involves the application of a force?

1666.

Which of the following involves the application of a force?

Answer»

Which of the following involves the application of a force?

Discussion

1667.	the eddy current is denoted by ?
Answer» the eddy current is denoted by ?

Discussion

1668.	Question 15The non S I and S I units of some physical quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity.(A)(B)(a) degree Celsius(i) kilogram(b) centimeter(ii) pascal(c) gram per centimeter cube(iii) metre(d) bar(iv) Kelvin(e) milligram(v) kilogram per metre cube
Answer» Question 15 The non S I and S I units of some physical quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity. $\begin{matrix} (A) & (B) (a) degree Celsius & (i) kilogram (b) centimeter & (ii) pascal (c) gram per centimeter cube & (iii) metre (d) bar & (iv) Kelvin (e) milligram & (v) kilogram per metre cube \end{matrix}$

Discussion

1669.	36. Define screw rule.
Answer» 36. Define screw rule.

Discussion

1670.	A body of mass 1 kg is making 3 RPS in a circle of radius one metre centripetal force acting on it is is
Answer» A body of mass 1 kg is making 3 RPS in a circle of radius one metre centripetal force acting on it is is

Discussion

1671.	What is velocity ratio?
Answer» What is velocity ratio?

Discussion

1672.	Explain distance of the closest approach in detail.
Answer» Explain distance of the closest approach in detail.

Discussion

1673.	Why one matter has different states
Answer» Why one matter has different states

Discussion

1674.	a parrot is flying due east at a speed of 5m/s .A train 300m long is also travelling due east at a speed of 15 m/s .both parrot and train are moving in a smae straiht line and train is 100 m behind the parrot at t=0 .then how long will train take to overtake the parrot completely
Answer» a parrot is flying due east at a speed of 5m/s .A train 300m long is also travelling due east at a speed of 15 m/s .both parrot and train are moving in a smae straiht line and train is 100 m behind the parrot at t=0 .then how long will train take to overtake the parrot completely

Discussion

1675.	Answer in brief : (a) What are the effects of a force applied to an object? (b) Name the different types of force. (c) How does gravity affect the motion of an object that has been thrown? (d) Name devices that make use of magnetic force. (e) Explain the advantages and disadvantages of friction. (f) What materials would you use to obtain static electric force?
Answer» Answer in brief : (a) What are the effects of a force applied to an object? (b) Name the different types of force. (c) How does gravity affect the motion of an object that has been thrown? (d) Name devices that make use of magnetic force. (e) Explain the advantages and disadvantages of friction. (f) What materials would you use to obtain static electric force?

1675.

Answer in brief : (a) What are the effects of a force applied to an object? (b) Name the different types of force. (c) How does gravity affect the motion of an object that has been thrown? (d) Name devices that make use of magnetic force. (e) Explain the advantages and disadvantages of friction. (f) What materials would you use to obtain static electric force?

Answer»

Answer in brief :

(a) What are the effects of a force applied to an object?

(b) Name the different types of force.

(c) How does gravity affect the motion of an object that has been thrown?

(d) Name devices that make use of magnetic force.

(e) Explain the advantages and disadvantages of friction.

(f) What materials would you use to obtain static electric force?

Discussion

1676.	How to use the \log table to do calculations
Answer» How to use the \log table to do calculations

Discussion

1677.	The ratio of the magnetic fields due to small bar magnet inend position an broad side on position is (at equal distancefrom the magnet)-(a)1/4 (b)1/2 (c)1 (d2
Answer» The ratio of the magnetic fields due to small bar magnet inend position an broad side on position is (at equal distancefrom the magnet)-(a)1/4 (b)1/2 (c)1 (d2

Discussion

1678.	When is a body said to be in motion in relation to an observer
Answer» When is a body said to be in motion in relation to an observer

Discussion

1679.	Which of these is luminous−sun, earth or moon?
Answer» Which of these is luminous−sun, earth or moon?

Discussion

1680.	the least count of a stopwatch is 0.2 second the time of 20 oscillation of a pendulum is measured to be 25 second the percentage error in time period is
Answer» the least count of a stopwatch is 0.2 second the time of 20 oscillation of a pendulum is measured to be 25 second the percentage error in time period is

Discussion

1681.	derivation of the angular acceleration of the simple pendulu
Answer» derivation of the angular acceleration of the simple pendulu

Discussion

1682.	Question 141One fermi is equal to 10−15 metre. The radius of a proton is 1.3 fermi. Write the radius of a proton (in metres) in standard form.
Answer» Question 141 One fermi is equal to $10^{- 15}$ metre. The radius of a proton is 1.3 fermi. Write the radius of a proton (in metres) in standard form.

1682.

Question 141One fermi is equal to 10−15 metre. The radius of a proton is 1.3 fermi. Write the radius of a proton (in metres) in standard form.

Answer»

Question 141

One fermi is equal to $10^{- 15}$ metre. The radius of a proton is 1.3 fermi. Write the radius of a proton (in metres) in standard form.

Discussion

1683.	In an experiment of simple pendulum, the time measured was 50s for 25 vibrations, when the length of the simple pendulum was taken 100 cm. If the least count of the stopwatch is 0.2s and that of water scale is 0.1cm, then find the maximum percentage error in the measurement of g. (1)0.5percent (2)0.4 " (3)0.9 " (4)1 "
Answer» In an experiment of simple pendulum, the time measured was 50s for 25 vibrations, when the length of the simple pendulum was taken 100 cm. If the least count of the stopwatch is 0.2s and that of water scale is 0.1cm, then find the maximum percentage error in the measurement of g. (1)0.5percent (2)0.4 " (3)0.9 " (4)1 "

Discussion

1684.	Explain the cause for different phases of the Moon.
Answer» Explain the cause for different phases of the Moon.

Discussion

1685.	A girl is 4m away from the plane mirror if she moves few steps closer to the mirror what happen to the image size in the mirror what will happen to the image size in the mirror
Answer» A girl is 4m away from the plane mirror if she moves few steps closer to the mirror what happen to the image size in the mirror what will happen to the image size in the mirror

Discussion

1686.	Why are handles of utenzute are made up of wood and plastic
Answer» Why are handles of utenzute are made up of wood and plastic

Discussion

1687.	For a satellite orbiting close to the surface of earth the period of revolution is 84 mins . Find the time period of another satellite orbiting at a height three times the radius of the earth from its surface
Answer» For a satellite orbiting close to the surface of earth the period of revolution is 84 mins . Find the time period of another satellite orbiting at a height three times the radius of the earth from its surface

Discussion

1688.	A machine's efficiency is 0.65. Therefore, it is efficient.
Answer» A machine's efficiency is 0.65. Therefore, it is efficient.

Discussion

1689.	What is mechanical advantage?
Answer» What is mechanical advantage?

Discussion

1690.	Why does the needle of a compass point north and south?
Answer» Why does the needle of a compass point north and south?

Discussion

1691.	what is the CN1,CN2,CN3,and CN4 an CN5 in ccp
Answer» what is the CN1,CN2,CN3,and CN4 an CN5 in ccp

Discussion

1692.	How many images of a person are formed who is in a room whose two adjacent walls and ceilings are plane mirrors?
Answer» How many images of a person are formed who is in a room whose two adjacent walls and ceilings are plane mirrors?

Discussion

1693.	Which of the given options correctly defines the motion of a child sitting on a swing that moves forward and backward?
Answer» Which of the given options correctly defines the motion of a child sitting on a swing that moves forward and backward?

Discussion

1694.	The time period of a sound wave is 0.02 s. What is its frequency in Hz?50
Answer» The time period of a sound wave is $0.02 s$ . What is its frequency in $Hz$ ? 50

Discussion

1695.	Which of the following pair(s) is/are magnetic in nature?
Answer» Which of the following pair(s) is/are magnetic in nature?

Discussion

1696.	How do we see things? Is light necessary for seeing things?
Answer» How do we see things? Is light necessary for seeing things?

Discussion

1697.	the length of rod is ( 11.05\pm0.2 ) cm. what is the length of two rod.
Answer» the length of rod is ( 11.05\pm0.2 ) cm. what is the length of two rod.

Discussion

1698.	Motion along a straight line is known as __________.
Answer» Motion along a straight line is known as __________.

Discussion

1699.	Given the area of a circle is 36 cm2. The area of the rectangle is 16th of the area of the circle. If the breadth of the rectangle is 1 cm, what is the length?
Answer» Given the area of a circle is $36 c m^{2}$ . The area of the rectangle is $\frac{1}{6}$ ^th of the area of the circle. If the breadth of the rectangle is $1 c m$ , what is the length?

Discussion

1700.	what is the minimum electric force b/w two charge 1m apartbin free space?
Answer» what is the minimum electric force b/w two charge 1m apartbin free space?

Discussion

Explore topic-wise InterviewSolutions in .

Why don’t two magnetic field lines intersect each other?

The given figure shows a squeezed rubber ball. Which of the following effects of force describes this activity?

Fig. shows comets without their tail. Show the tails of the comets at position A, B, and C. In which position will the tail be longest?

The ratio of the pole strength of two like magnetic poles is 9:1 and the distance between them is 12cm. At what point between the two poles, will the magnetic field be zero?

Define the centripetal acceleration ?

A car travels 30km at a uniform speed of 40 km/h and the next 30km at a uniform speed of 20km/h. Find its average speed.

98.What is the force between two magnet

In which direction do gravitational force and frictional force act?

can work done by friction ever be positive?

Question 16 A torch is placed at two different positions A and B, one by one, as shown in Fig. The shape of the shadow obtained in two positions is shown in the given Fig. Match the position of the torch and shape of the shadow of the ball.

When the north pole of a bar magnet is brought near the north pole of a freely suspended magnetic needle, it will ______.

Why is an electric cell needed in an electric circuit?

In __________motion, an object travels through the points in equidistant from a center point.

Will the bulb glow in the circuit shown in Fig.? Explain. What can be done to light the bulb? [5 MARKS]

What is plane mirror

Which of the following involves the application of a force?

the eddy current is denoted by ?

36. Define screw rule.

A body of mass 1 kg is making 3 RPS in a circle of radius one metre centripetal force acting on it is is

What is velocity ratio?

Explain distance of the closest approach in detail.

Why one matter has different states

a parrot is flying due east at a speed of 5m/s .A train 300m long is also travelling due east at a speed of 15 m/s .both parrot and train are moving in a smae straiht line and train is 100 m behind the parrot at t=0 .then how long will train take to overtake the parrot completely

How to use the \log table to do calculations

The ratio of the magnetic fields due to small bar magnet inend position an broad side on position is (at equal distancefrom the magnet)-(a)1/4 (b)1/2 (c)1 (d2

When is a body said to be in motion in relation to an observer

Which of these is luminous−sun, earth or moon?

the least count of a stopwatch is 0.2 second the time of 20 oscillation of a pendulum is measured to be 25 second the percentage error in time period is

derivation of the angular acceleration of the simple pendulu

Question 141One fermi is equal to 10−15 metre. The radius of a proton is 1.3 fermi. Write the radius of a proton (in metres) in standard form.

Explain the cause for different phases of the Moon.

A girl is 4m away from the plane mirror if she moves few steps closer to the mirror what happen to the image size in the mirror what will happen to the image size in the mirror

Why are handles of utenzute are made up of wood and plastic

For a satellite orbiting close to the surface of earth the period of revolution is 84 mins . Find the time period of another satellite orbiting at a height three times the radius of the earth from its surface

A machine's efficiency is 0.65. Therefore, it is efficient.

What is mechanical advantage?

Why does the needle of a compass point north and south?

what is the CN1,CN2,CN3,and CN4 an CN5 in ccp

How many images of a person are formed who is in a room whose two adjacent walls and ceilings are plane mirrors?

Which of the given options correctly defines the motion of a child sitting on a swing that moves forward and backward?

The time period of a sound wave is 0.02 s. What is its frequency in Hz?50

Which of the following pair(s) is/are magnetic in nature?

How do we see things? Is light necessary for seeing things?

the length of rod is ( 11.05\pm0.2 ) cm. what is the length of two rod.

Motion along a straight line is known as __________.

Given the area of a circle is 36 cm2. The area of the rectangle is 16th of the area of the circle. If the breadth of the rectangle is 1 cm, what is the length?

what is the minimum electric force b/w two charge 1m apartbin free space?