9478 + Interview Questions in Physics Page 113 InterviewSolution

5601.	Question 14A sound wave travels at a speed of 339ms−1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?
Answer» Question 14 A sound wave travels at a speed of $339 m s^{- 1}$ . If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?

Discussion

5602.	30.A solid cylinder of length l and radius r is heat upto same temperature as that of a cube of edge length a. If both have same material, volume and allowed to cool under similar conditions, then ratio of amount of radiations radiated will be (neglect radiation emitted from flat surfaces of the cylinder) ?
Answer» 30.A solid cylinder of length l and radius r is heat upto same temperature as that of a cube of edge length a. If both have same material, volume and allowed to cool under similar conditions, then ratio of amount of radiations radiated will be (neglect radiation emitted from flat surfaces of the cylinder) ?

Discussion

5603.	A plastic water bottle is filled with hot water. Will the steam expel air from inside of the bottle? After about 2 minutes the bottle is closed tightly and put in a container with cold water and ice. As the bottle cools down will the steam condense or not? Will the bottle get crushed?
Answer» A plastic water bottle is filled with hot water. Will the steam expel air from inside of the bottle? After about 2 minutes the bottle is closed tightly and put in a container with cold water and ice. As the bottle cools down will the steam condense or not? Will the bottle get crushed?

Discussion

5604.	Children are using ________ force to perform the shown activities.
Answer» Children are using ________ force to perform the shown activities.

Discussion

5605.	The weight of a boy on the surface of the earth is 300 N. What will be his mass? { take g=10m/s2}
Answer» The weight of a boy on the surface of the earth is 300 N. What will be his mass? { take $g = 10 m / s^{2}$ }

Discussion

5606.	What do u mean by the statement frequency of sound is 512hz
Answer» What do u mean by the statement frequency of sound is 512hz

Discussion

5607.	In the tester, LED bulb is used in place of a normal bulb because LED bulb needs ____ electric current in comparison.
Answer» In the tester, LED bulb is used in place of a normal bulb because LED bulb needs ____ electric current in comparison.

Discussion

5608.	Statement 1: Sound vibrations make the ear drum vibrate which further sends vibrations to the inner ear.Statement 2: Ear drum is a thin stretched membrane.
Answer» Statement 1: Sound vibrations make the ear drum vibrate which further sends vibrations to the inner ear. Statement 2: Ear drum is a thin stretched membrane.

Discussion

5609.	Explain the formation of a mirage?
Answer» Explain the formation of a mirage?

Discussion

5610.	Find the volume of a cube if each face of a cube has a perimeter of 32 cm?
Answer» Find the volume of a cube if each face of a cube has a perimeter of 32 cm?

Discussion

5611.	Which is the best approach to keep safe during a thunderstorm?
Answer» Which is the best approach to keep safe during a thunderstorm?

Discussion

5612.	A ray of light moving from an optically rarer medium to a denser medium:
Answer» A ray of light moving from an optically rarer medium to a denser medium:

Discussion

5613.	A person travels a distance of 5 m towards north-east, then turns south and travels 3 m. What is his total distance?Options:A) 8 mB) 2 mC) 4 mD) √34
Answer» A person travels a distance of 5 m towards north-east, then turns south and travels 3 m. What is his total distance? Options: A) 8 m B) 2 m C) 4 m D) √34

Discussion

5614.	Name the scale on which the magnitude (or intensity) of an earthquake is expressed.
Answer» Name the scale on which the magnitude (or intensity) of an earthquake is expressed.

Discussion

5615.	Which is a suitable method to decrease friction?
Answer» Which is a suitable method to decrease friction?

Discussion

5616.	Which of the following are units of pressure?
Answer» Which of the following are units of pressure?

Discussion

5617.	An equal force of 100 N is applied upon two similar sharp nails at different angles as shown in figure ⇒ The ratio of P(I) : P(II) will be?
Answer» An equal force of 100 N is applied upon two similar sharp nails at different angles as shown in figure ⇒ The ratio of P(I) : P(II) will be?

5617.

An equal force of 100 N is applied upon two similar sharp nails at different angles as shown in figure ⇒ The ratio of P(I) : P(II) will be?

Answer»

An equal force of 100 N is applied upon two similar sharp nails at different angles as shown in figure ⇒

The ratio of P(I) : P(II) will be?

Discussion

5618.	A sound source of frequency 600 Hz is moving towards an observer with velocity 20m/s. The speed of sound is 340m/s. The frequency heard by observer will be
Answer» A sound source of frequency 600 Hz is moving towards an observer with velocity 20m/s. The speed of sound is 340m/s. The frequency heard by observer will be

Discussion

5619.	Division of two irrational numbers can be a rational number (true/false)
Answer» Division of two irrational numbers can be a rational number (true/false)

Discussion

5620.	The relative density of a liquid is 0.5. The density bottle weighs 200 g when filled with water and 120 g when filled with the liquid. The mass of density bottle is:
Answer» The relative density of a liquid is $0.5$ . The density bottle weighs $200 g$ when filled with water and $120 g$ when filled with the liquid. The mass of density bottle is:

Discussion

5621.	Convert 1mm of Hg into Pascal. Take density of Hg =13.6×103 kg m-3 and g = 9.8 ms-2
Answer» Convert 1mm of Hg into Pascal. Take density of Hg =13.6×10³ kg m^-3 and g = 9.8 ms-2

Discussion

5622.	What is atmospheric pressure???can I get a easy answer for it
Answer» What is atmospheric pressure???can I get a easy answer for it

Discussion

5623.	Name two metal objects which have a coating of another metal.
Answer» Name two metal objects which have a coating of another metal.

Discussion

5624.	Why wings of fan are usually rectangle or oval in shape?
Answer» Why wings of fan are usually rectangle or oval in shape?

Discussion

5625.	Name the unit used to measure the loudness of sound. Also write its symbol.
Answer» Name the unit used to measure the loudness of sound. Also write its symbol.

Discussion

5626.	Name the largest planet of the solar system.
Answer» Name the largest planet of the solar system.

Discussion

5627.	Case 1: A ballon is fitted at the bottom of a cylinder which is half filled with water. Case 2: A ballon is fitted at the bottom of a cylinder which is full filled with water. ; in which case will the ballon bulge more.
Answer» Case 1: A ballon is fitted at the bottom of a cylinder which is half filled with water. Case 2: A ballon is fitted at the bottom of a cylinder which is full filled with water. ; in which case will the ballon bulge more.

5627.

Case 1: A ballon is fitted at the bottom of a cylinder which is half filled with water. Case 2: A ballon is fitted at the bottom of a cylinder which is full filled with water. ; in which case will the ballon bulge more.

Answer»

Case 1: A ballon is fitted at the bottom of a cylinder which is half filled with water.

Case 2: A ballon is fitted at the bottom of a cylinder which is full filled with water. ; in which case will the ballon bulge more.

Discussion

5628.	Why does the shape of an ointment tube change when we squeeze it ?
Answer» Why does the shape of an ointment tube change when we squeeze it ?

Discussion

5629.	Explain wavelength in simple words
Answer» Explain wavelength in simple words

Discussion

5630.	Metals are generally good conductors of electricity.
Answer» Metals are generally good conductors of electricity.

Discussion

5631.	Which of the following graphs represents higher pitch of sound?
Answer» Which of the following graphs represents higher pitch of sound?

Discussion

5632.	Is there anything which is actually at rest? If yes then what is it?
Answer» Is there anything which is actually at rest? If yes then what is it?

Discussion

5633.	Loudness of a sound is proportional to the square of the amplitude of the vibration producing the sound. Explain
Answer» Loudness of a sound is proportional to the square of the amplitude of the vibration producing the sound. Explain

Discussion

5634.	An object is suspended from a spring balance in a lift. The reading is 240 N when the lift is at rest. If the spring balance reading now changes to 220 N, then the lift is moving
Answer» An object is suspended from a spring balance in a lift. The reading is 240 N when the lift is at rest. If the spring balance reading now changes to 220 N, then the lift is moving

Discussion

5635.	What is strong nuclear force?
Answer» What is strong nuclear force?

Discussion

5636.	Friction does not depend on the following factor A)The nature of the surface. B)The normal reaction C)Roughness of the surface. D)The area of contact
Answer» Friction does not depend on the following factor A)The nature of the surface. B)The normal reaction C)Roughness of the surface. D)The area of contact

Discussion

5637.	Sounds having frequencies lower than 20 Hz are called:
Answer» Sounds having frequencies lower than 20 Hz are called:

5637.

Sounds having frequencies lower than 20 Hz are called:

Answer»

Sounds having frequencies lower than 20 Hz are called:

Discussion

5638.	When we left a rat from a height . She does not die . Why?
Answer» When we left a rat from a height . She does not die . Why?

Discussion

5639.	Rays from the sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed in front of this mirror so that the size of its image is equal to the size of the object?
Answer» Rays from the sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed in front of this mirror so that the size of its image is equal to the size of the object?

Discussion

5640.	In a bucket full of water, a block weighing 75 N was immersed. When a block is immersed, water weighing 23 N was spilt out of the bucket. The buoyant force on the block will be ___ Newtons.
Answer» In a bucket full of water, a block weighing $75 N$ was immersed. When a block is immersed, water weighing $23 N$ was spilt out of the bucket. The buoyant force on the block will be ___ Newtons.

Discussion

5641.	Lightning can ever burn up a tree. Lightning contains a tremendous amount of : (a) heat energy (b) electric energy (c) chemical energy (d) nuclear energy
Answer» Lightning can ever burn up a tree. Lightning contains a tremendous amount of : (a) heat energy (b) electric energy (c) chemical energy (d) nuclear energy

5641.

Lightning can ever burn up a tree. Lightning contains a tremendous amount of : (a) heat energy (b) electric energy (c) chemical energy (d) nuclear energy

Answer»

Lightning can ever burn up a tree. Lightning contains a tremendous amount of :

(a) heat energy (b) electric energy (c) chemical energy (d) nuclear energy

Discussion

5642.	Name two planets which can be seen as 'Morning Star' and 'Evening Star'.
Answer» Name two planets which can be seen as 'Morning Star' and 'Evening Star'.

Discussion

5643.	Materials like paper, thermocol and asbestos are:
Answer» Materials like paper, thermocol and asbestos are:

5643.

Materials like paper, thermocol and asbestos are:

Answer»

Materials like paper, thermocol and asbestos are:

Discussion

5644.	Which of the following is an irrational number?
Answer» Which of the following is an irrational number?

Discussion

5645.	What is the SI unit of force?
Answer» What is the SI unit of force?

Discussion

5646.	The following questions below contains four arguments of three sentences each. Choose the set in which the third statement is a logical conclusion of the first two. A. No sun is not white; all moon is sun; all moon is white. B. All windows are open. No open space is allocated; all windows is closed space. C. Some As can sleep late; Some Bs wake up early; Some As wake up early. D. No German can fire; all Americans bombard; both Germans and Americans can fight.
Answer» The following questions below contains four arguments of three sentences each. Choose the set in which the third statement is a logical conclusion of the first two. A. No sun is not white; all moon is sun; all moon is white. B. All windows are open. No open space is allocated; all windows is closed space. C. Some As can sleep late; Some Bs wake up early; Some As wake up early. D. No German can fire; all Americans bombard; both Germans and Americans can fight.

5646.

The following questions below contains four arguments of three sentences each. Choose the set in which the third statement is a logical conclusion of the first two. A. No sun is not white; all moon is sun; all moon is white. B. All windows are open. No open space is allocated; all windows is closed space. C. Some As can sleep late; Some Bs wake up early; Some As wake up early. D. No German can fire; all Americans bombard; both Germans and Americans can fight.

Answer» The following questions below contains four arguments of three sentences each. Choose the set in which the third statement is a logical conclusion of the first two.

A. No sun is not white; all moon is sun; all moon is white.

B. All windows are open. No open space is allocated; all windows is closed space.

C. Some As can sleep late; Some Bs wake up early; Some As wake up early.

D. No German can fire; all Americans bombard; both Germans and Americans can fight.

Discussion

5647.	Which of the following statement is correct regarding an electrolytic cell?
Answer» Which of the following statement is correct regarding an electrolytic cell?

Discussion

5648.	Given below are the differences between asteroids and comets: 1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material. 2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury. 3.Comets show a perceptible glowing tail, while asteroids do not. Which of the statements given above is/are correct?
Answer» Given below are the differences between asteroids and comets: 1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material. 2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury. 3.Comets show a perceptible glowing tail, while asteroids do not. Which of the statements given above is/are correct?

5648.

Given below are the differences between asteroids and comets: 1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material. 2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury. 3.Comets show a perceptible glowing tail, while asteroids do not. Which of the statements given above is/are correct?

Answer»

Given below are the differences between asteroids and comets:

1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.

2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.

3.Comets show a perceptible glowing tail, while asteroids do not.

Which of the statements given above is/are correct?

Discussion

5649.	What is time dilation ?
Answer» What is time dilation ?

Discussion

5650.	Why after lunar eclipes the moon's bottom starts shining first than the upper part ? Please explain with a diagram.
Answer» Why after lunar eclipes the moon's bottom starts shining first than the upper part ? Please explain with a diagram.

Discussion

Explore topic-wise InterviewSolutions in .

Question 14A sound wave travels at a speed of 339ms−1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?

Children are using ________ force to perform the shown activities.

The weight of a boy on the surface of the earth is 300 N. What will be his mass? { take g=10m/s2}

What do u mean by the statement frequency of sound is 512hz

In the tester, LED bulb is used in place of a normal bulb because LED bulb needs ____ electric current in comparison.

Statement 1: Sound vibrations make the ear drum vibrate which further sends vibrations to the inner ear.Statement 2: Ear drum is a thin stretched membrane.

Explain the formation of a mirage?

Find the volume of a cube if each face of a cube has a perimeter of 32 cm?

Which is the best approach to keep safe during a thunderstorm?

A ray of light moving from an optically rarer medium to a denser medium:

A person travels a distance of 5 m towards north-east, then turns south and travels 3 m. What is his total distance?Options:A) 8 mB) 2 mC) 4 mD) √34

Name the scale on which the magnitude (or intensity) of an earthquake is expressed.

Which is a suitable method to decrease friction?

Which of the following are units of pressure?

An equal force of 100 N is applied upon two similar sharp nails at different angles as shown in figure ⇒ The ratio of P(I) : P(II) will be?

A sound source of frequency 600 Hz is moving towards an observer with velocity 20m/s. The speed of sound is 340m/s. The frequency heard by observer will be

Division of two irrational numbers can be a rational number (true/false)

The relative density of a liquid is 0.5. The density bottle weighs 200 g when filled with water and 120 g when filled with the liquid. The mass of density bottle is:

Convert 1mm of Hg into Pascal. Take density of Hg =13.6×103 kg m-3 and g = 9.8 ms-2

What is atmospheric pressure???can I get a easy answer for it

Name two metal objects which have a coating of another metal.

Why wings of fan are usually rectangle or oval in shape?

Name the unit used to measure the loudness of sound. Also write its symbol.

Name the largest planet of the solar system.

Case 1: A ballon is fitted at the bottom of a cylinder which is half filled with water. Case 2: A ballon is fitted at the bottom of a cylinder which is full filled with water. ; in which case will the ballon bulge more.

Why does the shape of an ointment tube change when we squeeze it ?

Explain wavelength in simple words

Metals are generally good conductors of electricity.

Which of the following graphs represents higher pitch of sound?

Is there anything which is actually at rest? If yes then what is it?

Loudness of a sound is proportional to the square of the amplitude of the vibration producing the sound. Explain

An object is suspended from a spring balance in a lift. The reading is 240 N when the lift is at rest. If the spring balance reading now changes to 220 N, then the lift is moving

What is strong nuclear force?

Friction does not depend on the following factor A)The nature of the surface. B)The normal reaction C)Roughness of the surface. D)The area of contact

Sounds having frequencies lower than 20 Hz are called:

When we left a rat from a height . She does not die . Why?

Rays from the sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed in front of this mirror so that the size of its image is equal to the size of the object?

In a bucket full of water, a block weighing 75 N was immersed. When a block is immersed, water weighing 23 N was spilt out of the bucket. The buoyant force on the block will be ___ Newtons.

Lightning can ever burn up a tree. Lightning contains a tremendous amount of : (a) heat energy (b) electric energy (c) chemical energy (d) nuclear energy

Name two planets which can be seen as 'Morning Star' and 'Evening Star'.

Materials like paper, thermocol and asbestos are:

Which of the following is an irrational number?

What is the SI unit of force?

Which of the following statement is correct regarding an electrolytic cell?

What is time dilation ?

Why after lunar eclipes the moon's bottom starts shining first than the upper part ? Please explain with a diagram.