9478 + Interview Questions in Physics Page 184 InterviewSolution

9151.	What is the audible range of frequencies for human beings?
Answer» What is the audible range of frequencies for human beings?

Discussion

9152.	Birds fly in the air. Why the earth's gravitational force pull them?
Answer» Birds fly in the air. Why the earth's gravitational force pull them?

Discussion

9153.	What are the characterstics of rotaional movement
Answer» What are the characterstics of rotaional movement

Discussion

9154.	Mathematical form of pressure I am not understanding
Answer» Mathematical form of pressure I am not understanding

9154.

Mathematical form of pressure I am not understanding

Answer»

Mathematical form of pressure

I am not understanding

Discussion

9155.	A sphere of radius r has a mass m. Its density is .
Answer» A sphere of radius $r$ has a mass $m$ . Its density is .

Discussion

9156.	Which of the following barometer will show the accurate reading?
Answer» Which of the following barometer will show the accurate reading?

9156.

Which of the following barometer will show the accurate reading?

Answer»

Which of the following barometer will show the accurate reading?

Discussion

9157.	Find the area between two concentric circles of radii 4 cm and 30 mm respectively.
Answer» Find the area between two concentric circles of radii $4 cm$ and $30 mm$ respectively.

Discussion

9158.	How do u calculate the total electrical energy?
Answer» How do u calculate the total electrical energy?

Discussion

9159.	You are provided with s positively charged gold leaf electroscope. State what happens when: 1) A glass rod rubbed with a silk is brought near the disc of electroscope. 2) A glass rod rubbed with silk is rolled on the disc of electroscope. 3) An uncharged metal rod is brought near the disc of electroscope.
Answer» You are provided with s positively charged gold leaf electroscope. State what happens when: 1) A glass rod rubbed with a silk is brought near the disc of electroscope. 2) A glass rod rubbed with silk is rolled on the disc of electroscope. 3) An uncharged metal rod is brought near the disc of electroscope.

Discussion

9160.	What is gravitational force? Give two examples where you see this force in action? [3 MARKS]
Answer» What is gravitational force? Give two examples where you see this force in action? [3 MARKS]

Discussion

9161.	Why does sandpaper produce a lot of friction?
Answer» Why does sandpaper produce a lot of friction?

Discussion

9162.	What is earthing? Why earthing is provided in the buildings? [2 MARKS]
Answer» What is earthing? Why earthing is provided in the buildings? [2 MARKS]

Discussion

9163.	Which characteristic of the planet Saturn makes it unique in the solar system?
Answer» Which characteristic of the planet Saturn makes it unique in the solar system?

Discussion

9164.	After the body starts moving, the friction involved with motion is
Answer» After the body starts moving, the friction involved with motion is

Discussion

9165.	Question 20 (d) Boojho planned an activity to observe an object A through pipes as shown in the figure, so that he could see objects which he could not directly see. Indicate the direction of rays in the figure.
Answer» Question 20 (d) Boojho planned an activity to observe an object A through pipes as shown in the figure, so that he could see objects which he could not directly see. Indicate the direction of rays in the figure.

9165.

Question 20 (d) Boojho planned an activity to observe an object A through pipes as shown in the figure, so that he could see objects which he could not directly see. Indicate the direction of rays in the figure.

Answer»

Question 20 (d)

Boojho planned an activity to observe an object A through pipes as shown in the figure, so that he could see objects which he could not directly see.

Indicate the direction of rays in the figure.

Discussion

9166.	Give 2Examples each for a. Muscular force b. Contact force c. Non - contact force 😀
Answer» Give 2Examples each for a. Muscular force b. Contact force c. Non - contact force 😀

Discussion

9167.	A block of mass 10 kg which was originally at rest, is being pushed by two equal forces in opposite directions. What can we say about the motion of the block?
Answer» A block of mass $10 k g$ which was originally at rest, is being pushed by two equal forces in opposite directions. What can we say about the motion of the block?

Discussion

9168.	If two ends of a spring balance are pulled by a force of 10N, then the reading of the spring balance will be
Answer» If two ends of a spring balance are pulled by a force of 10N, then the reading of the spring balance will be

Discussion

9169.	Which apparatus is used for electrolysis of substances?
Answer» Which apparatus is used for electrolysis of substances?

Discussion

9170.	Calculate the pressure at a depth of 50 m below the surface of the sea. The density of sea water is 1024kg/m3
Answer» Calculate the pressure at a depth of 50 m below the surface of the sea. The density of sea water is 1024 $k g / m^{3}$

Discussion

9171.	The time period (T) of a vibrating body of frequency (f=100 Hz) is:
Answer» The time period $(T)$ of a vibrating body of frequency $(f = 100 H z)$ is:

Discussion

9172.	If the Velocity Ratio(V.R) of a simple machine is more than that of a Mechanical Advantage(M.A), then which one of the following choices is the best suit?
Answer» If the Velocity Ratio(V.R) of a simple machine is more than that of a Mechanical Advantage(M.A), then which one of the following choices is the best suit?

Discussion

9173.	Any change of states of matter always involve change in ___________
Answer» Any change of states of matter always involve change in ___________

Discussion

9174.	Calculate the work done in bringing a unit positive test charge from a point with potential 200 V to a point at potential 100 V.
Answer» Calculate the work done in bringing a unit positive test charge from a point with potential 200 V to a point at potential 100 V.

Discussion

9175.	A printed page is kept pressed by a glass cube (μ = 1.5) of edge 6.0 cm. By what amount will the printed letters appear to be shifted when viewed from the top?
Answer» A printed page is kept pressed by a glass cube ( $μ$ = 1.5) of edge $6.0 c m$ . By what amount will the printed letters appear to be shifted when viewed from the top?

Discussion

9176.	In which medium, does the sound travel at a faster speed?
Answer» In which medium, does the sound travel at a faster speed?

Discussion

9177.	A spanner of length 10 cm is used to open a nut by applying a minimum force of 5.0 N. Calculate the moment of force required.
Answer» A spanner of length 10 cm is used to open a nut by applying a minimum force of 5.0 N. Calculate the moment of force required.

Discussion

9178.	What happens to air when it is heated?
Answer» What happens to air when it is heated?

Discussion

9179.	The magnitude of buoyant force on a body of fixed volume when submerged completely depends on
Answer» The magnitude of buoyant force on a body of fixed volume when submerged completely depends on

Discussion

9180.	A boy weighing 60 kgf stands on platform of dimensions 2.5×0.5cm. What pressure in Pascal does he exert?
Answer» A boy weighing 60 kgf stands on platform of dimensions $2.5 \times 0.5 c m$ . What pressure in Pascal does he exert?

Discussion

9181.	3 similar vessels A, B, and C are filled with equal masses of 3 liquids of the same density and kept at 1m,1.5m and 3 m above the ground respectively. Which vessel will experience the highest pressure at its bottom?
Answer» 3 similar vessels A, B, and C are filled with equal masses of 3 liquids of the same density and kept at 1m,1.5m and 3 m above the ground respectively. Which vessel will experience the highest pressure at its bottom?

Discussion

9182.	Which of the following(s) can be used for navigation?
Answer» Which of the following(s) can be used for navigation?

Discussion

9183.	Micro-organism responsible for decomposition during bio gas preparation are:
Answer» Micro-organism responsible for decomposition during bio gas preparation are:

Discussion

9184.	On what factors does the friction on an object depends in a fluid? [3 MARKS]
Answer» On what factors does the friction on an object depends in a fluid? [3 MARKS]

Discussion

9185.	The physical significance of refractive index can be understood as :-
Answer» The physical significance of refractive index can be understood as :-

Discussion

9186.	Among the following, around which all the stars appear to revolve around?
Answer» Among the following, around which all the stars appear to revolve around?

Discussion

9187.	A block of wood is kept on the table top. The mass of wooden black is 5kg and its dimensions are 40cm×8cm. Find the pressure exerted by the wooden block on the table?
Answer» A block of wood is kept on the table top. The mass of wooden black is 5kg and its dimensions are 40cm×8cm. Find the pressure exerted by the wooden block on the table?

Discussion

9188.	Does water have friction?
Answer» Does water have friction?

Discussion

9189.	Which of the following alternatives are correct regarding myopia?
Answer» Which of the following alternatives are correct regarding myopia?

Discussion

9190.	The distance between a compression and the adjacent rarefaction is
Answer» The distance between a compression and the adjacent rarefaction is

Discussion

9191.	Consider 2 mirrors arranged at a right angle as shown. A ray is an incident at an angle of 30∘ to the normal of the mirror 1. What is the angle made by the outgoing ray with the normal of mirror 2?
Answer» Consider 2 mirrors arranged at a right angle as shown. A ray is an incident at an angle of $30^{\circ}$ to the normal of the mirror 1. What is the angle made by the outgoing ray with the normal of mirror 2?

9191.

Consider 2 mirrors arranged at a right angle as shown. A ray is an incident at an angle of 30∘ to the normal of the mirror 1. What is the angle made by the outgoing ray with the normal of mirror 2?

Answer»

Consider 2 mirrors arranged at a right angle as shown. A ray is an incident at an angle of $30^{\circ}$ to the normal of the mirror 1.
What is the angle made by the outgoing ray with the normal of mirror 2?

Discussion

9192.	If the angle between the incident ray and the reflected ray is 70∘, what is the angle of incidence?
Answer» If the angle between the incident ray and the reflected ray is $70^{\circ}$ , what is the angle of incidence?

Discussion

9193.	Which of the following is essential to see an object?
Answer» Which of the following is essential to see an object?

Discussion

9194.	The humans can float on water but not walk. Why?
Answer» The humans can float on water but not walk. Why?

Discussion

9195.	Which of the following natural phenomenon can cause the formation of a permanent magnet from an iron ore?
Answer» Which of the following natural phenomenon can cause the formation of a permanent magnet from an iron ore?

Discussion

9196.	Question 13 Paheli set up an experiment using liquid A in the beaker as shown in the figure. She observed that the bulb glows. Then she replaced the liquid A by another liquid B. This time the bulb did not glow. Boojho suggested replacing the bulb by an LED. They observed that the LED glows. Explain.
Answer» Question 13 Paheli set up an experiment using liquid A in the beaker as shown in the figure. She observed that the bulb glows. Then she replaced the liquid A by another liquid B. This time the bulb did not glow. Boojho suggested replacing the bulb by an LED. They observed that the LED glows. Explain.

Discussion

9197.	What type of force do you require to move a book kept on a table?
Answer» What type of force do you require to move a book kept on a table?

Discussion

9198.	what is force and pressure? what is the relation between joule and newton?
Answer» what is force and pressure? what is the relation between joule and newton?

Discussion

9199.	Moon is tidally locked , rotates around Earth because of the gravitational force . But my question is why moon doesn't fall into Earth surface ? What is the exact reason for this?
Answer» Moon is tidally locked , rotates around Earth because of the gravitational force . But my question is why moon doesn't fall into Earth surface ? What is the exact reason for this?

Discussion

9200.	Why are the rear wheels in a truck more broader as compared to the front wheels
Answer» Why are the rear wheels in a truck more broader as compared to the front wheels

Discussion

Explore topic-wise InterviewSolutions in .

What is the audible range of frequencies for human beings?

Birds fly in the air. Why the earth's gravitational force pull them?

What are the characterstics of rotaional movement

Mathematical form of pressure I am not understanding

A sphere of radius r has a mass m. Its density is .

Which of the following barometer will show the accurate reading?

Find the area between two concentric circles of radii 4 cm and 30 mm respectively.

How do u calculate the total electrical energy?

What is gravitational force? Give two examples where you see this force in action? [3 MARKS]

Why does sandpaper produce a lot of friction?

What is earthing? Why earthing is provided in the buildings? [2 MARKS]

Which characteristic of the planet Saturn makes it unique in the solar system?

After the body starts moving, the friction involved with motion is

Question 20 (d) Boojho planned an activity to observe an object A through pipes as shown in the figure, so that he could see objects which he could not directly see. Indicate the direction of rays in the figure.

Give 2Examples each for a. Muscular force b. Contact force c. Non - contact force 😀

A block of mass 10 kg which was originally at rest, is being pushed by two equal forces in opposite directions. What can we say about the motion of the block?

If two ends of a spring balance are pulled by a force of 10N, then the reading of the spring balance will be

Which apparatus is used for electrolysis of substances?

Calculate the pressure at a depth of 50 m below the surface of the sea. The density of sea water is 1024kg/m3

The time period (T) of a vibrating body of frequency (f=100 Hz) is:

If the Velocity Ratio(V.R) of a simple machine is more than that of a Mechanical Advantage(M.A), then which one of the following choices is the best suit?

Any change of states of matter always involve change in ___________

Calculate the work done in bringing a unit positive test charge from a point with potential 200 V to a point at potential 100 V.

A printed page is kept pressed by a glass cube (μ = 1.5) of edge 6.0 cm. By what amount will the printed letters appear to be shifted when viewed from the top?

In which medium, does the sound travel at a faster speed?

A spanner of length 10 cm is used to open a nut by applying a minimum force of 5.0 N. Calculate the moment of force required.

What happens to air when it is heated?

The magnitude of buoyant force on a body of fixed volume when submerged completely depends on

A boy weighing 60 kgf stands on platform of dimensions 2.5×0.5cm. What pressure in Pascal does he exert?

3 similar vessels A, B, and C are filled with equal masses of 3 liquids of the same density and kept at 1m,1.5m and 3 m above the ground respectively. Which vessel will experience the highest pressure at its bottom?

Which of the following(s) can be used for navigation?

Micro-organism responsible for decomposition during bio gas preparation are:

On what factors does the friction on an object depends in a fluid? [3 MARKS]

The physical significance of refractive index can be understood as :-

Among the following, around which all the stars appear to revolve around?

A block of wood is kept on the table top. The mass of wooden black is 5kg and its dimensions are 40cm×8cm. Find the pressure exerted by the wooden block on the table?

Does water have friction?

Which of the following alternatives are correct regarding myopia?

The distance between a compression and the adjacent rarefaction is

Consider 2 mirrors arranged at a right angle as shown. A ray is an incident at an angle of 30∘ to the normal of the mirror 1. What is the angle made by the outgoing ray with the normal of mirror 2?

If the angle between the incident ray and the reflected ray is 70∘, what is the angle of incidence?

Which of the following is essential to see an object?

The humans can float on water but not walk. Why?

Which of the following natural phenomenon can cause the formation of a permanent magnet from an iron ore?

What type of force do you require to move a book kept on a table?

what is force and pressure? what is the relation between joule and newton?

Moon is tidally locked , rotates around Earth because of the gravitational force . But my question is why moon doesn't fall into Earth surface ? What is the exact reason for this?

Why are the rear wheels in a truck more broader as compared to the front wheels