9478 + Interview Questions in Physics Page 172 InterviewSolution

8551.	Question 13 How many small cubes with edge of 20 cm each can be just accommodated in a cubical box of 2 m edge? (a) 10 (b) 100 (c) 1000 (d) 10000
Answer» Question 13 How many small cubes with edge of 20 cm each can be just accommodated in a cubical box of 2 m edge? (a) 10 (b) 100 (c) 1000 (d) 10000

8551.

Question 13 How many small cubes with edge of 20 cm each can be just accommodated in a cubical box of 2 m edge? (a) 10 (b) 100 (c) 1000 (d) 10000

Answer»

Question 13

How many small cubes with edge of 20 cm each can be just accommodated in a cubical box of 2 m edge?

(a) 10 (b) 100 (c) 1000 (d) 10000

8552.	A torch bulb rated as 4.5 W, 1.5 V is connected as shown in the figure. The emf of the cell needed to make the bulb glow at full intensity is
Answer» A torch bulb rated as 4.5 W, 1.5 V is connected as shown in the figure. The emf of the cell needed to make the bulb glow at full intensity is

Discussion

8553.	When light travels obliquely from one medium to another medium, the direction of light rays :
Answer» When light travels obliquely from one medium to another medium, the direction of light rays :

Discussion

8554.	A force of magnitude 25 N acting on a body of mass 2 kg doubles its kinetic energy to 200 J. The displacement of the body during this interval is:
Answer» A force of magnitude $25 N$ acting on a body of mass $2 k g$ doubles its kinetic energy to $200 J$ . The displacement of the body during this interval is:

Discussion

8555.	The force required to stretch a steel wire of 1cm2 cross - section to 1.1 times its length would be (Y=2×1011Nm−2)
Answer» The force required to stretch a steel wire of $1 c m^{2}$ cross - section to 1.1 times its length would be $(Y = 2 \times 10^{11} N m^{- 2})$

Discussion

8556.	_____ are huge waves created when an earthquake happens under the sea.
Answer» _____ are huge waves created when an earthquake happens under the sea.

Discussion

8557.	Identify the denser medium in the given figure:
Answer» Identify the denser medium in the given figure:

Discussion

8558.	Intermolecular forces are
Answer» Intermolecular forces are

Discussion

8559.	Why does the bulge of a ball on in a vessel reduce when it is nearer the bottom?
Answer» Why does the bulge of a ball on in a vessel reduce when it is nearer the bottom?

Discussion

8560.	A light ray is incident on a mirror such that it makes it makes 30∘ with the surface of the mirror. The angle of reflection is
Answer» A light ray is incident on a mirror such that it makes it makes $30^{\circ}$ with the surface of the mirror. The angle of reflection is

Discussion

8561.	Sun produces its own heat and light. Is it also some type of combustion?
Answer» Sun produces its own heat and light. Is it also some type of combustion?

Discussion

8562.	Explain how, friction enables us to walk without slipping.
Answer» Explain how, friction enables us to walk without slipping.

Discussion

8563.	Which type of friction comes into play when a book kept on cylindrical pencils is moved by pushing?
Answer» Which type of friction comes into play when a book kept on cylindrical pencils is moved by pushing?

Discussion

8564.	Why is repulsion the true test for electrification?
Answer» Why is repulsion the true test for electrification?

Discussion

8565.	The news says that there was an earthquake of magnitude 7.5 on the Richter scale in Nepal, and there was an earthquake of magnitude 6 on the Richter scale in your hometown. Which of the following would be true?
Answer» The news says that there was an earthquake of magnitude 7.5 on the Richter scale in Nepal, and there was an earthquake of magnitude 6 on the Richter scale in your hometown. Which of the following would be true?

Discussion

8566.	What do you mean by reflection of light?
Answer» What do you mean by reflection of light?

Discussion

8567.	When sound propagates through air which of the following varies?
Answer» When sound propagates through air which of the following varies?

Discussion

8568.	A block sliding down from an inclined is an example of ____
Answer» A block sliding down from an inclined is an example of ____

Discussion

8569.	Which of the following is/are derived quantity/quantities?
Answer» Which of the following is/are derived quantity/quantities?

Discussion

8570.	Joe drives 120 km at 60 kmph, and then he drives the next 120 km at 40 kmph. What is his average speed for the entire trip in kmph?
Answer» Joe drives 120 km at 60 kmph, and then he drives the next 120 km at 40 kmph. What is his average speed for the entire trip in kmph?

Discussion

8571.	Identify the waxing phase of the Moon from the following.
Answer» Identify the waxing phase of the Moon from the following.

Discussion

8572.	What does it mean by amplified sound and also the meaning of 'interlocked bones in the ear amplify the sound that strikes the eardrum'?
Answer» What does it mean by amplified sound and also the meaning of 'interlocked bones in the ear amplify the sound that strikes the eardrum'?

Discussion

8573.	How is the focal length of a spherical mirror related to which radius of curvature
Answer» How is the focal length of a spherical mirror related to which radius of curvature

Discussion

8574.	Explain different types of contact forces with help of examples and the diagram
Answer» Explain different types of contact forces with help of examples and the diagram

Discussion

8575.	In which one of the following situations does a conventional electric current flow due North?
Answer» In which one of the following situations does a conventional electric current flow due North?

Discussion

8576.	Evaporation happens ___ the boiling point of the liquid.
Answer» Evaporation happens ___ the boiling point of the liquid.

Discussion

8577.	light does not have mass but it have engery so if it have engery then it must have mass too due to e =mc^2 or should it not?
Answer» light does not have mass but it have engery so if it have engery then it must have mass too due to e =mc^2 or should it not?

Discussion

8578.	Sounds travel through all (solid liquid has) then why does we hear eco? Why does it occurs at particular distance?
Answer» Sounds travel through all (solid liquid has) then why does we hear eco? Why does it occurs at particular distance?

Discussion

8579.	(a) What is the difference between regular reflection and diffuse reflection of light? Name one object which can produce regular reflection of light and diffuse reflection of light. (b) Draw diagrams to show regular reflection of light and another diffuse reflection of light. (c) Which of the following will cause regular reflection of light and which will cause diffuse reflection of light? (a) Polished wooden table (b) Chalk powder (c) Cardboard (d) Mirror (d) Paper (e) Marable floor with water spread over it.
Answer» (a) What is the difference between regular reflection and diffuse reflection of light? Name one object which can produce regular reflection of light and diffuse reflection of light. (b) Draw diagrams to show regular reflection of light and another diffuse reflection of light. (c) Which of the following will cause regular reflection of light and which will cause diffuse reflection of light? (a) Polished wooden table (b) Chalk powder (c) Cardboard (d) Mirror (d) Paper (e) Marable floor with water spread over it.

8579.

(a) What is the difference between regular reflection and diffuse reflection of light? Name one object which can produce regular reflection of light and diffuse reflection of light. (b) Draw diagrams to show regular reflection of light and another diffuse reflection of light. (c) Which of the following will cause regular reflection of light and which will cause diffuse reflection of light? (a) Polished wooden table (b) Chalk powder (c) Cardboard (d) Mirror (d) Paper (e) Marable floor with water spread over it.

Answer»

(a) What is the difference between regular reflection and diffuse reflection of light? Name one object which can produce regular reflection of light and diffuse reflection of light.

(b) Draw diagrams to show regular reflection of light and another diffuse reflection of light.

(c) Which of the following will cause regular reflection of light and which will cause diffuse reflection of light?

(a) Polished wooden table (b) Chalk powder

(c) Cardboard (d) Mirror

(d) Paper (e) Marable floor with water spread over it.

Discussion

8580.	Can you give some questions about matter?? At least ten questions
Answer» Can you give some questions about matter?? At least ten questions

8580.

Can you give some questions about matter?? At least ten questions

Answer»

Can you give some questions about matter??

At least ten questions

Discussion

8581.	A beam of light is incident at an angle of 35 degrees with respect to the surface of a glass slab. After refraction, find the angle made by the emergent ray with respect to the surface of the glass slab.
Answer» A beam of light is incident at an angle of 35 degrees with respect to the surface of a glass slab. After refraction, find the angle made by the emergent ray with respect to the surface of the glass slab.

Discussion

8582.	When we rub our hands vigorously our hands get hot .Why ?
Answer» When we rub our hands vigorously our hands get hot .Why ?

Discussion

8583.	Why Can we write with a fountain pen without friction?
Answer» Why Can we write with a fountain pen without friction?

Discussion

8584.	Question 3 Phases of the moon occur because (a) we can see only that part of the moon which reflects light towards us. (b) our distance from the moon keeps changing. (c) the shadow of the Earth covers only a part of moon’s surface. (d) the thickness of the moon’s atmosphere is not constant.
Answer» Question 3 Phases of the moon occur because (a) we can see only that part of the moon which reflects light towards us. (b) our distance from the moon keeps changing. (c) the shadow of the Earth covers only a part of moon’s surface. (d) the thickness of the moon’s atmosphere is not constant.

8584.

Question 3 Phases of the moon occur because (a) we can see only that part of the moon which reflects light towards us. (b) our distance from the moon keeps changing. (c) the shadow of the Earth covers only a part of moon’s surface. (d) the thickness of the moon’s atmosphere is not constant.

Answer»

Question 3

Phases of the moon occur because

(a) we can see only that part of the moon which reflects light towards us.

(b) our distance from the moon keeps changing.

(c) the shadow of the Earth covers only a part of moon’s surface.

(d) the thickness of the moon’s atmosphere is not constant.

Discussion

8585.	Find the tension in the string?
Answer» Find the tension in the string?

8585.

Find the tension in the string?

Answer»

Find the tension in the string?

Discussion

8586.	Calculate the pressure in pascal exerted by a force of 300 N acting normally on an area of 30cm2.
Answer» Calculate the pressure in pascal exerted by a force of 300 N acting normally on an area of $30 c m^{2}$ .

Discussion

8587.	Which of the following is not an example of potential energy?
Answer» Which of the following is not an example of potential energy?

Discussion

8588.	Question 3(a) State whether the following statement is true or false. Like charges attract each other.
Answer» Question 3(a) State whether the following statement is true or false. Like charges attract each other.

8588.

Question 3(a) State whether the following statement is true or false. Like charges attract each other.

Answer»

Question 3(a)

State whether the following statement is true or false.
Like charges attract each other.

Discussion

8589.	The characteristic of sound which distinguishes a feeble sound from a loud sound of same frequency is:
Answer» The characteristic of sound which distinguishes a feeble sound from a loud sound of same frequency is:

Discussion

8590.	Which part of the Moon changes its shape at regular intervals as seen by an observer on Earth?
Answer» Which part of the Moon changes its shape at regular intervals as seen by an observer on Earth?

Discussion

8591.	Why do camels or elephants have broad feet?
Answer» Why do camels or elephants have broad feet?

Discussion

8592.	Name two substances which can be charged by friction.
Answer» Name two substances which can be charged by friction.

Discussion

8593.	Which of the following material/materials added to iron gives you Alnico?
Answer» Which of the following material/materials added to iron gives you Alnico?

Discussion

8594.	Does gravitational force attract only neutral substances towards it
Answer» Does gravitational force attract only neutral substances towards it

Discussion

8595.	The density of aluminium is 2.7 g cm−3. Express it in kg m−3.
Answer» The density of aluminium is 2.7 g $c m^{-} 3$ . Express it in kg $m^{-} 3$ .

Discussion

8596.	Explain why, if we strike a steel tumbler with a metal spoon lightly, we hear a feeble sound but if we hit the tumbler hard, a loud sound is heard.
Answer» Explain why, if we strike a steel tumbler with a metal spoon lightly, we hear a feeble sound but if we hit the tumbler hard, a loud sound is heard.

Discussion

8597.	Passage of electric current through a conducting solution causes ____________.
Answer» Passage of electric current through a conducting solution causes ____________.

Discussion

8598.	If the amplitude of a wave is doubled, what will be the effect on its loudness ?
Answer» If the amplitude of a wave is doubled, what will be the effect on its loudness ?

Discussion

8599.	Force of adhesion is related to___.
Answer» Force of adhesion is related to___.

Discussion

8600.	Question 2 A bus decreases its speed from 80 km h−1 to 60 km h−1 in 5 s. Find the acceleration of the bus.
Answer» Question 2 A bus decreases its speed from $80 k m h^{- 1} t o 60 k m h^{- 1}$ in 5 s. Find the acceleration of the bus.

Discussion

Explore topic-wise InterviewSolutions in .

Question 13 How many small cubes with edge of 20 cm each can be just accommodated in a cubical box of 2 m edge? (a) 10 (b) 100 (c) 1000 (d) 10000

A torch bulb rated as 4.5 W, 1.5 V is connected as shown in the figure. The emf of the cell needed to make the bulb glow at full intensity is

When light travels obliquely from one medium to another medium, the direction of light rays :

A force of magnitude 25 N acting on a body of mass 2 kg doubles its kinetic energy to 200 J. The displacement of the body during this interval is:

The force required to stretch a steel wire of 1cm2 cross - section to 1.1 times its length would be (Y=2×1011Nm−2)

_____ are huge waves created when an earthquake happens under the sea.

Identify the denser medium in the given figure:

Intermolecular forces are

Why does the bulge of a ball on in a vessel reduce when it is nearer the bottom?

A light ray is incident on a mirror such that it makes it makes 30∘ with the surface of the mirror. The angle of reflection is

Sun produces its own heat and light. Is it also some type of combustion?

Explain how, friction enables us to walk without slipping.

Which type of friction comes into play when a book kept on cylindrical pencils is moved by pushing?

Why is repulsion the true test for electrification?

The news says that there was an earthquake of magnitude 7.5 on the Richter scale in Nepal, and there was an earthquake of magnitude 6 on the Richter scale in your hometown. Which of the following would be true?

What do you mean by reflection of light?

When sound propagates through air which of the following varies?

A block sliding down from an inclined is an example of ____

Which of the following is/are derived quantity/quantities?

Joe drives 120 km at 60 kmph, and then he drives the next 120 km at 40 kmph. What is his average speed for the entire trip in kmph?

Identify the waxing phase of the Moon from the following.

What does it mean by amplified sound and also the meaning of 'interlocked bones in the ear amplify the sound that strikes the eardrum'?

How is the focal length of a spherical mirror related to which radius of curvature

Explain different types of contact forces with help of examples and the diagram

In which one of the following situations does a conventional electric current flow due North?

Evaporation happens ___ the boiling point of the liquid.

light does not have mass but it have engery so if it have engery then it must have mass too due to e =mc^2 or should it not?

Sounds travel through all (solid liquid has) then why does we hear eco? Why does it occurs at particular distance?

Can you give some questions about matter?? At least ten questions

A beam of light is incident at an angle of 35 degrees with respect to the surface of a glass slab. After refraction, find the angle made by the emergent ray with respect to the surface of the glass slab.

When we rub our hands vigorously our hands get hot .Why ?

Why Can we write with a fountain pen without friction?

Question 3 Phases of the moon occur because (a) we can see only that part of the moon which reflects light towards us. (b) our distance from the moon keeps changing. (c) the shadow of the Earth covers only a part of moon’s surface. (d) the thickness of the moon’s atmosphere is not constant.

Find the tension in the string?

Calculate the pressure in pascal exerted by a force of 300 N acting normally on an area of 30cm2.

Which of the following is not an example of potential energy?

Question 3(a) State whether the following statement is true or false. Like charges attract each other.

The characteristic of sound which distinguishes a feeble sound from a loud sound of same frequency is:

Which part of the Moon changes its shape at regular intervals as seen by an observer on Earth?

Why do camels or elephants have broad feet?

Name two substances which can be charged by friction.

Which of the following material/materials added to iron gives you Alnico?

Does gravitational force attract only neutral substances towards it

The density of aluminium is 2.7 g cm−3. Express it in kg m−3.

Explain why, if we strike a steel tumbler with a metal spoon lightly, we hear a feeble sound but if we hit the tumbler hard, a loud sound is heard.

Passage of electric current through a conducting solution causes ____________.

If the amplitude of a wave is doubled, what will be the effect on its loudness ?

Force of adhesion is related to___.

Question 2 A bus decreases its speed from 80 km h−1 to 60 km h−1 in 5 s. Find the acceleration of the bus.