6277 + Interview Questions in Physics Page 87 InterviewSolution

4301.	What is the volume of the given cuboid? Area of each side of smaller cube is 1 cm2.
Answer» What is the volume of the given cuboid? Area of each side of smaller cube is $1 c m^{2}$ .

Discussion

4302.	Face powder takes the shine off of a person’s nose. The optical effect responsible for this is______
Answer» Face powder takes the shine off of a person’s nose. The optical effect responsible for this is______

Discussion

4303.	Which of the following statements is true?
Answer» Which of the following statements is true?

Discussion

4304.	We are able to see objects because:
Answer» We are able to see objects because:

Discussion

4305.	Question 7 Figure shows an oscillating pendulum. Time taken by the bob to move from A to C is t1 and from C to O is t2 . The time period of this simple pendulum is (a) (t1+t2) (b) 2(t1+t2) (c) 3(t1+t2) (d) 4(t1+t2)
Answer» Question 7 Figure shows an oscillating pendulum. Time taken by the bob to move from A to C is $t_{1}$ and from C to O is $t_{2}$ . The time period of this simple pendulum is (a) $(t_{1} + t_{2})$ (b) $2 (t_{1} + t_{2})$ (c) $3 (t_{1} + t_{2})$ (d) $4 (t_{1} + t_{2})$

4305.

Question 7 Figure shows an oscillating pendulum. Time taken by the bob to move from A to C is t1 and from C to O is t2 . The time period of this simple pendulum is (a) (t1+t2) (b) 2(t1+t2) (c) 3(t1+t2) (d) 4(t1+t2)

Answer»

Question 7

Figure shows an oscillating pendulum.

Time taken by the bob to move from A to C is $t_{1}$ and from C to O is $t_{2}$ . The time period of this simple pendulum is

(a) $(t_{1} + t_{2})$

(b) $2 (t_{1} + t_{2})$

(c) $3 (t_{1} + t_{2})$

(d) $4 (t_{1} + t_{2})$

Discussion

4306.	Question 9 If a sphere is inscribed in a cube, then the ratio of the volume of the cube to the volume of the sphere will be6:π.
Answer» Question 9 If a sphere is inscribed in a cube, then the ratio of the volume of the cube to the volume of the sphere will be $6 : π$ .

Discussion

4307.	Why does the sky appear blue from the earth?
Answer» Why does the sky appear blue from the earth?

Discussion

4308.	A scientist took an iron rod and a wooden rod and wrapped each of them in a piece of paper. There were then heated. It was found that the paper around the metal rod doesn't burn whereas the one around the wooden rod catches fire. Can you explain why?
Answer» A scientist took an iron rod and a wooden rod and wrapped each of them in a piece of paper. There were then heated. It was found that the paper around the metal rod doesn't burn whereas the one around the wooden rod catches fire. Can you explain why?

Discussion

4309.	What does this graph indicate about the motion of an object?
Answer» What does this graph indicate about the motion of an object?

4309.

What does this graph indicate about the motion of an object?

Answer»

What does this graph indicate about the motion of an object?

Discussion

4310.	If the area of a rectangular piece is 36 cm2 such that length is 4 times its breadth, find its length.
Answer» If the area of a rectangular piece is $36 c m^{2}$ such that length is 4 times its breadth, find its length.

Discussion

4311.	A violent storm with a column of rapidly rotating winds, having the appearance of a dark, funnel-shaped cloud that reaches the sky to the ground is called
Answer» A violent storm with a column of rapidly rotating winds, having the appearance of a dark, funnel-shaped cloud that reaches the sky to the ground is called

Discussion

4312.	(I). Huge tidal waves wrecked the vast coastline early in the morning killing thousands of people. (II). Large number of people gathered along the coastline to enjoy the spectacular view of sunrise.
Answer» (I). Huge tidal waves wrecked the vast coastline early in the morning killing thousands of people. (II). Large number of people gathered along the coastline to enjoy the spectacular view of sunrise.

4312.

(I). Huge tidal waves wrecked the vast coastline early in the morning killing thousands of people. (II). Large number of people gathered along the coastline to enjoy the spectacular view of sunrise.

Answer»

(I). Huge tidal waves wrecked the vast coastline early in the morning killing thousands of people.

(II). Large number of people gathered along the coastline to enjoy the spectacular view of sunrise.

Discussion

4313.	Which type of object allows light to pass completely through it?
Answer» Which type of object allows light to pass completely through it?

Discussion

4314.	Sushweta is sitting in her house looking at the sea through a window. She feels a cool breeze blowing across her face. Which of the following can be said to be true?
Answer» Sushweta is sitting in her house looking at the sea through a window. She feels a cool breeze blowing across her face. Which of the following can be said to be true?

Discussion

4315.	What is the difference between periodic motion and uniform motion
Answer» What is the difference between periodic motion and uniform motion

Discussion

4316.	How can we determine the speed of an object from its distance-time graph?
Answer» How can we determine the speed of an object from its distance-time graph?

Discussion

4317.	(a) Explain some uses of insulators. (b) A wooden spoon is dipped in a cup of ice cream, will its other end become cold? Give a reason for your answer. [3 MARKS]
Answer» (a) Explain some uses of insulators. (b) A wooden spoon is dipped in a cup of ice cream, will its other end become cold? Give a reason for your answer. [3 MARKS]

Discussion

4318.	When we suck water from a water bottle , our lips tend to experience a vaccume. Why does this happen?
Answer» When we suck water from a water bottle , our lips tend to experience a vaccume. Why does this happen?

Discussion

4319.	The magnetic field produced due to the current passing through a conductor is proportional to the ______.
Answer» The magnetic field produced due to the current passing through a conductor is proportional to the ______.

Discussion

4320.	Sound can be passed through
Answer» Sound can be passed through

Discussion

4321.	An object travelled 16 m in four seconds and then another 16 meter in two seconds what is the speed of the object?
Answer» An object travelled 16 m in four seconds and then another 16 meter in two seconds what is the speed of the object?

Discussion

4322.	Heat content of a substance does not depend upon:
Answer» Heat content of a substance does not depend upon:

Discussion

4323.	In a given thermometer, there are 100 major divisions between the freezing point and boiling point of water. Each major division is equal to 5 minor divisions, then is the minimum reading that can be taken using this thermometer
Answer» In a given thermometer, there are 100 major divisions between the freezing point and boiling point of water. Each major division is equal to 5 minor divisions, then is the minimum reading that can be taken using this thermometer

Discussion

4324.	Question 12. Why is it so that if you wear two thin sweaters, you will feel warmer as compared to a single thick sweater?
Answer» Question 12. Why is it so that if you wear two thin sweaters, you will feel warmer as compared to a single thick sweater?

Discussion

4325.	What is thermal expansion? Explain the different types of expansions.
Answer» What is thermal expansion? Explain the different types of expansions.

Discussion

4326.	What is virtual and real image?
Answer» What is virtual and real image?

Discussion

4327.	Why the thermometer is kept under the tongue?
Answer» Why the thermometer is kept under the tongue?

Discussion

4328.	What is an odometer?
Answer» What is an odometer?

Discussion

4329.	The coefficient of linear expansion of brass and steel are α1 and α2. If we take a brass rod of length l1 and steel rod of length l2 at 0∘C, their difference in length (l2−l1)will remain the same at a temperature if
Answer» The coefficient of linear expansion of brass and steel are $α_{1}$ and $α_{2}$ . If we take a brass rod of length $l_{1}$ and steel rod of length $l_{2} a t 0^{\circ} C,$ their difference in length $(l_{2} - l_{1})$ will remain the same at a temperature if

Discussion

4330.	Sphere has a radius of 7 cm. If the radius is increased to 14 cm, calculate the change in the surface area of the sphere.
Answer» Sphere has a radius of 7 cm. If the radius is increased to 14 cm, calculate the change in the surface area of the sphere.

Discussion

4331.	You measure the length of a brass rod on a hot July afternoon and a cool January evening, using the same aluminium scale. To your surprise you find that the rod length is measured to be smaller on the summer day! How?
Answer» You measure the length of a brass rod on a hot July afternoon and a cool January evening, using the same aluminium scale. To your surprise you find that the rod length is measured to be smaller on the summer day! How?

Discussion

4332.	A kid throws a stone in a lake. The stone gets sunk in the water. Then he throws an object of mass ten times that of the stone and specific gravity of the object is 0.82. Choose the right answer.
Answer» A kid throws a stone in a lake. The stone gets sunk in the water. Then he throws an object of mass ten times that of the stone and specific gravity of the object is 0.82. Choose the right answer.

Discussion

4333.	The bulb in the circuit shown in figure does not glow. Can you identify the problem? Make necessary changes in the circuit to make the bulb glow. [3 MARKS]
Answer» The bulb in the circuit shown in figure does not glow. Can you identify the problem? Make necessary changes in the circuit to make the bulb glow. [3 MARKS]

Discussion

4334.	Circuit Breaker Device which can be used in place of fuse in domestic electric wiring is called :
Answer» Circuit Breaker Device which can be used in place of fuse in domestic electric wiring is called :

Discussion

4335.	Choose the correct option according to the angle between force and direction of displacement. Coloumn1Coloumn21. θ is zeroi) Work done is always zero2. θ is less than 900ii) Work done is non−negative 3. θ is greater than 900iii) Work done is always positive4. θ is 900iv) Work done is never positive
Answer» Choose the correct option according to the angle between force and direction of displacement. $\begin{matrix} C o l o u m n 1 & C o l o u m n 2 1. θ i s z e r o & i) W o r k d o n e i s a l w a y s z e r o 2. θ i s l e s s t h a n 90^{0} & i i) W o r k d o n e i s n o n - n e g a t i v e 3. θ i s g r e a t e r t h a n 90^{0} & i i i) W o r k d o n e i s a l w a y s p o s i t i v e 4. θ i s 90^{0} & i v) W o r k d o n e i s n e v e r p o s i t i v e \end{matrix}$

4335.

Choose the correct option according to the angle between force and direction of displacement. Coloumn1Coloumn21. θ is zeroi) Work done is always zero2. θ is less than 900ii) Work done is non−negative 3. θ is greater than 900iii) Work done is always positive4. θ is 900iv) Work done is never positive

Answer»

Choose the correct option according to the angle between force and direction of displacement.

$\begin{matrix} C o l o u m n 1 & C o l o u m n 2 1. θ i s z e r o & i) W o r k d o n e i s a l w a y s z e r o 2. θ i s l e s s t h a n 90^{0} & i i) W o r k d o n e i s n o n - n e g a t i v e 3. θ i s g r e a t e r t h a n 90^{0} & i i i) W o r k d o n e i s a l w a y s p o s i t i v e 4. θ i s 90^{0} & i v) W o r k d o n e i s n e v e r p o s i t i v e \end{matrix}$

Discussion

4336.	How do symbols help in reading maps?
Answer» How do symbols help in reading maps?

Discussion

4337.	Question 95 State whether the statement is True or False. If the areas of two circles are same, they are congruent.
Answer» Question 95 State whether the statement is True or False. If the areas of two circles are same, they are congruent.

4337.

Question 95 State whether the statement is True or False. If the areas of two circles are same, they are congruent.

Answer»

Question 95

State whether the statement is True or False.

If the areas of two circles are same, they are congruent.

Discussion

4338.	Why is a convex lens called a converging lens and a concave lens a diverging lens? [3 MARKS]
Answer» Why is a convex lens called a converging lens and a concave lens a diverging lens? [3 MARKS]

Discussion

4339.	A bunch of balloons with a sandbag of mass m attached with a string is rising with an acceleration a. A fraction of sand is dropped from it, the acceleration of balloon will ___ .
Answer» A bunch of balloons with a sandbag of mass $m$ attached with a string is rising with an acceleration $a$ . A fraction of sand is dropped from it, the acceleration of balloon will ___ .

Discussion

4340.	The winds coming from the sea contain more water vapour as compared to those blowing from land to sea. Why? [2 MARKS]
Answer» The winds coming from the sea contain more water vapour as compared to those blowing from land to sea. Why? [2 MARKS]

Discussion

4341.	(i) What is the normal temperature of a human body? (ii) How does the heat from the sun reach us? [2 MARKS]
Answer» (i) What is the normal temperature of a human body? (ii) How does the heat from the sun reach us? [2 MARKS]

Discussion

4342.	Question 11 (v) State whether the following statements are True/False. Bathing outdoors should be avoided during the thunderstorm.
Answer» Question 11 (v) State whether the following statements are True/False. Bathing outdoors should be avoided during the thunderstorm.

4342.

Question 11 (v) State whether the following statements are True/False. Bathing outdoors should be avoided during the thunderstorm.

Answer»

Question 11 (v)

State whether the following statements are True/False.
Bathing outdoors should be avoided during the thunderstorm.

Discussion

4343.	A mirror changes the ________ of light that falls on it.
Answer» A mirror changes the ________ of light that falls on it.

Discussion

4344.	We can easily hear the sound of an approaching train by putting your ear on the track well before you could hear its sound in the air. Why?
Answer» We can easily hear the sound of an approaching train by putting your ear on the track well before you could hear its sound in the air. Why?

Discussion

4345.	Q))The transfer of heat from molecule to molecule,without the movement of molecules from one place to another is ::: (a)conduction (b)convection (c)radiation (d)either of these sir/ma'am pls answer fast as it is urgent .pls sir/maam thanking you krit
Answer» Q))The transfer of heat from molecule to molecule,without the movement of molecules from one place to another is ::: (a)conduction (b)convection (c)radiation (d)either of these sir/ma'am pls answer fast as it is urgent ._{pls sir/maam} thanking you krit

Discussion

4346.	what is random motion?
Answer» what is random motion?

Discussion

4347.	When current flows in the coil rounded around an iron core then the iron core becomes an:
Answer» When current flows in the coil rounded around an iron core then the iron core becomes an:

Discussion

4348.	A ball is thrown with an initial velocity of 20ms−1. Find the time of flight by the body. (Take g=10ms−2)
Answer» A ball is thrown with an initial velocity of $20 m s^{- 1}$ . Find the time of flight by the body. (Take $g = 10 m s^{- 2}$ )

Discussion

4349.	The amount of light reflected depends upon:
Answer» The amount of light reflected depends upon:

Discussion

4350.	How can be friction counted under electromagnetic force? What is meant by the relative strength of the forces?
Answer» How can be friction counted under electromagnetic force? What is meant by the relative strength of the forces?

Discussion

Explore topic-wise InterviewSolutions in .

What is the volume of the given cuboid? Area of each side of smaller cube is 1 cm2.

Face powder takes the shine off of a person’s nose. The optical effect responsible for this is______

Which of the following statements is true?

We are able to see objects because:

Question 7 Figure shows an oscillating pendulum. Time taken by the bob to move from A to C is t1 and from C to O is t2 . The time period of this simple pendulum is (a) (t1+t2) (b) 2(t1+t2) (c) 3(t1+t2) (d) 4(t1+t2)

Question 9 If a sphere is inscribed in a cube, then the ratio of the volume of the cube to the volume of the sphere will be6:π.

Why does the sky appear blue from the earth?

A scientist took an iron rod and a wooden rod and wrapped each of them in a piece of paper. There were then heated. It was found that the paper around the metal rod doesn't burn whereas the one around the wooden rod catches fire. Can you explain why?

What does this graph indicate about the motion of an object?

If the area of a rectangular piece is 36 cm2 such that length is 4 times its breadth, find its length.

A violent storm with a column of rapidly rotating winds, having the appearance of a dark, funnel-shaped cloud that reaches the sky to the ground is called

(I). Huge tidal waves wrecked the vast coastline early in the morning killing thousands of people. (II). Large number of people gathered along the coastline to enjoy the spectacular view of sunrise.

Which type of object allows light to pass completely through it?

Sushweta is sitting in her house looking at the sea through a window. She feels a cool breeze blowing across her face. Which of the following can be said to be true?

What is the difference between periodic motion and uniform motion

How can we determine the speed of an object from its distance-time graph?

(a) Explain some uses of insulators. (b) A wooden spoon is dipped in a cup of ice cream, will its other end become cold? Give a reason for your answer. [3 MARKS]

When we suck water from a water bottle , our lips tend to experience a vaccume. Why does this happen?

The magnetic field produced due to the current passing through a conductor is proportional to the ______.

Sound can be passed through

An object travelled 16 m in four seconds and then another 16 meter in two seconds what is the speed of the object?

Heat content of a substance does not depend upon:

In a given thermometer, there are 100 major divisions between the freezing point and boiling point of water. Each major division is equal to 5 minor divisions, then is the minimum reading that can be taken using this thermometer

Question 12. Why is it so that if you wear two thin sweaters, you will feel warmer as compared to a single thick sweater?

What is thermal expansion? Explain the different types of expansions.

What is virtual and real image?

Why the thermometer is kept under the tongue?

What is an odometer?

The coefficient of linear expansion of brass and steel are α1 and α2. If we take a brass rod of length l1 and steel rod of length l2 at 0∘C, their difference in length (l2−l1)will remain the same at a temperature if

Sphere has a radius of 7 cm. If the radius is increased to 14 cm, calculate the change in the surface area of the sphere.

You measure the length of a brass rod on a hot July afternoon and a cool January evening, using the same aluminium scale. To your surprise you find that the rod length is measured to be smaller on the summer day! How?

A kid throws a stone in a lake. The stone gets sunk in the water. Then he throws an object of mass ten times that of the stone and specific gravity of the object is 0.82. Choose the right answer.

The bulb in the circuit shown in figure does not glow. Can you identify the problem? Make necessary changes in the circuit to make the bulb glow. [3 MARKS]

Circuit Breaker Device which can be used in place of fuse in domestic electric wiring is called :

How do symbols help in reading maps?

Question 95 State whether the statement is True or False. If the areas of two circles are same, they are congruent.

Why is a convex lens called a converging lens and a concave lens a diverging lens? [3 MARKS]

A bunch of balloons with a sandbag of mass m attached with a string is rising with an acceleration a. A fraction of sand is dropped from it, the acceleration of balloon will ___ .

The winds coming from the sea contain more water vapour as compared to those blowing from land to sea. Why? [2 MARKS]

(i) What is the normal temperature of a human body? (ii) How does the heat from the sun reach us? [2 MARKS]

Question 11 (v) State whether the following statements are True/False. Bathing outdoors should be avoided during the thunderstorm.

A mirror changes the ________ of light that falls on it.

We can easily hear the sound of an approaching train by putting your ear on the track well before you could hear its sound in the air. Why?

Q))The transfer of heat from molecule to molecule,without the movement of molecules from one place to another is ::: (a)conduction (b)convection (c)radiation (d)either of these sir/ma'am pls answer fast as it is urgent .​​​​​​​pls sir/maam thanking you krit

what is random motion?

When current flows in the coil rounded around an iron core then the iron core becomes an:

A ball is thrown with an initial velocity of 20ms−1. Find the time of flight by the body. (Take g=10ms−2)

The amount of light reflected depends upon:

How can be friction counted under electromagnetic force? What is meant by the relative strength of the forces?

Q))The transfer of heat from molecule to molecule,without the movement of molecules from one place to another is ::: (a)conduction (b)convection (c)radiation (d)either of these sir/ma'am pls answer fast as it is urgent .pls sir/maam thanking you krit