6277 + Interview Questions in Physics Page 122 InterviewSolution

6051.	Which constellation appears like a big ladle or a question mark?
Answer» Which constellation appears like a big ladle or a question mark?

Discussion

6052.	We often use a simple setup, known as ________, to demonstrate and use the magnetic effects of currents in the laboratory.
Answer» We often use a simple setup, known as ________, to demonstrate and use the magnetic effects of currents in the laboratory.

Discussion

6053.	The core of an electromagnet or an electric bell is made up of soft iron and not steel because
Answer» The core of an electromagnet or an electric bell is made up of soft iron and not steel because

Discussion

6054.	A train travels 40 km at a uniform speed of 30km/hr. Its average speed after travelling another 40 km is 45km/hr for the whole journey. Find its speed in the second half of the journey.
Answer» A train travels 40 km at a uniform speed of $30 k m / h r$ . Its average speed after travelling another 40 km is $45 k m / h r$ for the whole journey. Find its speed in the second half of the journey.

Discussion

6055.	There are two spherical balls A and B of the same material with same surface, but the diameter of A is half that of B. If A and B are heated to the same temperature and then allowed to cool, then
Answer» There are two spherical balls A and B of the same material with same surface, but the diameter of A is half that of B. If A and B are heated to the same temperature and then allowed to cool, then

Discussion

6056.	The bending of light when it travels from one medium to another is called ___ .
Answer» The bending of light when it travels from one medium to another is called ___ .

Discussion

6057.	State the mathematical expression of work
Answer» State the mathematical expression of work

Discussion

6058.	The correct order of radii is :
Answer» The correct order of radii is :

Discussion

6059.	The Young’s modulus of brass and steel are 10×1010N m−2 and 2× 1011 N m−2 respectively. A brass wire and a steel wire of the same length are extended by 1 mm under the same force. The radii of the brass and steel wires are RB and Rs respectively. Then
Answer» The Young’s modulus of brass and steel are $10 \times 10^{10} N m^{- 2} a n d 2 \times 10^{11} N m^{- 2}$ respectively. A brass wire and a steel wire of the same length are extended by 1 mm under the same force. The radii of the brass and steel wires are $R_{B}$ and $R_{s}$ respectively. Then

Discussion

6060.	What happens when the temperature of a substance is increased?
Answer» What happens when the temperature of a substance is increased?

Discussion

6061.	What are the advantages and disadvantages of using mercury in thermometer? [5 MARKS]
Answer» What are the advantages and disadvantages of using mercury in thermometer? [5 MARKS]

Discussion

6062.	In a circus, an artist is swinging on a trapeze. What kind of motion is it?
Answer» In a circus, an artist is swinging on a trapeze. What kind of motion is it?

6062.

In a circus, an artist is swinging on a trapeze. What kind of motion is it?

Answer»

In a circus, an artist is swinging on a trapeze. What kind of motion is it?

Discussion

6063.	What is meant by thermal equilibrium? What is its significance? [3 MARKS]
Answer» What is meant by thermal equilibrium? What is its significance? [3 MARKS]

Discussion

6064.	How does the kinetic energy of an object change, when its (i) mass alone is doubled and (ii) speed alone is doubled?
Answer» How does the kinetic energy of an object change, when its (i) mass alone is doubled and (ii) speed alone is doubled?

Discussion

6065.	What are the images formed by the convex lens and concave lens ?
Answer» What are the images formed by the convex lens and concave lens ?

Discussion

6066.	Does light bent around corners?
Answer» Does light bent around corners?

Discussion

6067.	A plane takes 2 hrs to travel from Delhi to Bangalore. The distance between Delhi and Bangalore is approximately 1800 km. Find the speed of the plane in km/hr.
Answer» A plane takes 2 hrs to travel from Delhi to Bangalore. The distance between Delhi and Bangalore is approximately 1800 km. Find the speed of the plane in km/hr.

Discussion

6068.	If the image formed is upright and enlarged as you bring your face towards the mirror, the mirror is ___________.
Answer» If the image formed is upright and enlarged as you bring your face towards the mirror, the mirror is ___________.

Discussion

6069.	The diameter of a brass rod is 4 mm and Young’s modulus of brass is 9×1010Nm2. The force required to stretch by 0.1% of its length is
Answer» The diameter of a brass rod is 4 mm and Young’s modulus of brass is $9 \times 10^{10} \frac{N}{m^{2}}$ . The force required to stretch by 0.1% of its length is

Discussion

6070.	Which of these is a naturally occurring magnet?
Answer» Which of these is a naturally occurring magnet?

Discussion

6071.	Which of the following pairs consist of a conductor and an insulator of electricity?
Answer» Which of the following pairs consist of a conductor and an insulator of electricity?

Discussion

6072.	At the centre of a tornado there is
Answer» At the centre of a tornado there is

Discussion

6073.	It was a rainy day in Bangalore. Rohit was sitting besides the window when he saw a lightning. He started his stop watch. He found that after 22 seconds of lightning thunder was heard. Calculate the height of the clouds which caused this lightning. Given, Speed of light = 3 x 108 ms and Speed of sound = 340ms.
Answer» It was a rainy day in Bangalore. Rohit was sitting besides the window when he saw a lightning. He started his stop watch. He found that after 22 seconds of lightning thunder was heard. Calculate the height of the clouds which caused this lightning. Given, Speed of light = 3 x $10^{8}$ $\frac{m}{s}$ and Speed of sound = $340 \frac{m}{s}$ .

Discussion

6074.	Why Ventilators are must for a house even though there are windows. Explain?
Answer» Why Ventilators are must for a house even though there are windows. Explain?

Discussion

6075.	What do you mean by the term 'photosynthesis ' and why it is named so? [ 2 marks ]
Answer» What do you mean by the term 'photosynthesis ' and why it is named so? [ 2 marks ]

Discussion

6076.	Find the case where heat flow can take place in between the two bodies. Given are the temperatures of both the bodies, measured with two different scales.
Answer» Find the case where heat flow can take place in between the two bodies. Given are the temperatures of both the bodies, measured with two different scales.

Discussion

6077.	A train travels from Nagpur to Chennai with a constant speed of 80 kmph and returns from Chennai to Nagpur with a constant speed of 60 kmph. Find out the average speed of the train.
Answer» A train travels from Nagpur to Chennai with a constant speed of $80 k m p h$ and returns from Chennai to Nagpur with a constant speed of $60 k m p h$ . Find out the average speed of the train.

Discussion

6078.	The application(s) of plane mirror is/are
Answer» The application(s) of plane mirror is/are

Discussion

6079.	What does it mean if we say that a turning fork has a frequency of 256Hz?
Answer» What does it mean if we say that a turning fork has a frequency of 256Hz?

Discussion

6080.	Definition of one one joule
Answer» Definition of one one joule

Discussion

6081.	What does radar and sonar mean
Answer» What does radar and sonar mean

Discussion

6082.	The filament of a bulb glows due to?
Answer» The filament of a bulb glows due to?

Discussion

6083.	Does a sphere shaped magnet has poles ?
Answer» Does a sphere shaped magnet has poles ?

Discussion

6084.	In which of the following medium is the velocity of sound equal to zero?
Answer» In which of the following medium is the velocity of sound equal to zero?

Discussion

6085.	In spectrum obtained with prism which colour is deviated maximum?
Answer» In spectrum obtained with prism which colour is deviated maximum?

Discussion

6086.	Why the sky is blue?
Answer» Why the sky is blue?

Discussion

6087.	Question 2 (vii) State whether the following statement is true or false. Rubber is a magnetic material.
Answer» Question 2 (vii) State whether the following statement is true or false. Rubber is a magnetic material.

6087.

Question 2 (vii) State whether the following statement is true or false. Rubber is a magnetic material.

Answer»

Question 2 (vii)

State whether the following statement is true or false.

Rubber is a magnetic material.

Discussion

6088.	Harry says water exerts pressure on the bottom of the bucket, but Robert says water exerts pressure on the wall of the bucket. Whose statement is correct?
Answer» Harry says water exerts pressure on the bottom of the bucket, but Robert says water exerts pressure on the wall of the bucket. Whose statement is correct?

Discussion

6089.	Where do we use an electromagnet?
Answer» Where do we use an electromagnet?

Discussion

6090.	Two objects move towards each other till they meet at a point. The speed of first object is 5 ms−1 and the speed of the second object is 10 ms−1. If the distance between the objects is 30 m initially, what is the difference between the distances travelled by the two bodies?
Answer» Two objects move towards each other till they meet at a point. The speed of first object is $5 m s^{- 1}$ and the speed of the second object is $10 m s^{- 1}$ . If the distance between the objects is $30 m$ initially, what is the difference between the distances travelled by the two bodies?

Discussion

6091.	Match the following with suitable answers. SITUATIONTYPE OF IMAGE1Image seen on a cinema screenaVirtual Image2Your image in a polished mirrorbReal image
Answer» Match the following with suitable answers. $\begin{matrix} S I T U A T I O N & T Y P E O F I M A G E 1 & I m a g e s e e n o n a c i n e m a s c r e e n & a & V i r t u a l I m a g e 2 & Y o u r i m a g e i n a p o l i s h e d m i r r o r & b & R e a l i m a g e \end{matrix}$

6091.

Match the following with suitable answers. SITUATIONTYPE OF IMAGE1Image seen on a cinema screenaVirtual Image2Your image in a polished mirrorbReal image

Answer»

Match the following with suitable answers.

$\begin{matrix} S I T U A T I O N & T Y P E O F I M A G E 1 & I m a g e s e e n o n a c i n e m a s c r e e n & a & V i r t u a l I m a g e 2 & Y o u r i m a g e i n a p o l i s h e d m i r r o r & b & R e a l i m a g e \end{matrix}$

Discussion

6092.	Which one of the following is written at one corner of speedometer?
Answer» Which one of the following is written at one corner of speedometer?

Discussion

6093.	Convection _______.
Answer» Convection _______.

Discussion

6094.	Why are tea cups not preferred to be made of metals?
Answer» Why are tea cups not preferred to be made of metals?

Discussion

6095.	Pick out the options which work on the same working principle as that of the given device.
Answer» Pick out the options which work on the same working principle as that of the given device.

6095.

Pick out the options which work on the same working principle as that of the given device.

Answer»

Pick out the options which work on the same working principle as that of the given device.

Discussion

6096.	A boy is observing his image in a plane mirror. The distance between the mirror and his image is 6 m. If he moves 2 m towards the mirror, then the distance between the boy and his image will be:
Answer» A boy is observing his image in a plane mirror. The distance between the mirror and his image is 6 $m$ . If he moves 2 $m$ towards the mirror, then the distance between the boy and his image will be:

Discussion

6097.	When a body is heated, its average kinetic energy
Answer» When a body is heated, its average kinetic energy

Discussion

6098.	A cube is pushed in such a way that it is sliding on a horizontal surface. Frictional force acting on the cube can be increased by:
Answer» A cube is pushed in such a way that it is sliding on a horizontal surface. Frictional force acting on the cube can be increased by:

Discussion

6099.	What do you mean by an electrical circuit? What are the components of an electrical circuit? [5 MARKS]
Answer» What do you mean by an electrical circuit? What are the components of an electrical circuit? [5 MARKS]

Discussion

6100.	If an iron chair and a wooden chair are kept in the sun for a sufficient amount of time and then, are touched, which of them will appear warmer?
Answer» If an iron chair and a wooden chair are kept in the sun for a sufficient amount of time and then, are touched, which of them will appear warmer?

Discussion

Explore topic-wise InterviewSolutions in .

Which constellation appears like a big ladle or a question mark?

We often use a simple setup, known as ________, to demonstrate and use the magnetic effects of currents in the laboratory.

The core of an electromagnet or an electric bell is made up of soft iron and not steel because

A train travels 40 km at a uniform speed of 30km/hr. Its average speed after travelling another 40 km is 45km/hr for the whole journey. Find its speed in the second half of the journey.

There are two spherical balls A and B of the same material with same surface, but the diameter of A is half that of B. If A and B are heated to the same temperature and then allowed to cool, then

The bending of light when it travels from one medium to another is called ___ .

State the mathematical expression of work

The correct order of radii is :

The Young’s modulus of brass and steel are 10×1010N m−2 and 2× 1011 N m−2 respectively. A brass wire and a steel wire of the same length are extended by 1 mm under the same force. The radii of the brass and steel wires are RB and Rs respectively. Then

What happens when the temperature of a substance is increased?

What are the advantages and disadvantages of using mercury in thermometer? [5 MARKS]

In a circus, an artist is swinging on a trapeze. What kind of motion is it?

What is meant by thermal equilibrium? What is its significance? [3 MARKS]

How does the kinetic energy of an object change, when its (i) mass alone is doubled and (ii) speed alone is doubled?

What are the images formed by the convex lens and concave lens ?

Does light bent around corners?

A plane takes 2 hrs to travel from Delhi to Bangalore. The distance between Delhi and Bangalore is approximately 1800 km. Find the speed of the plane in km/hr.

If the image formed is upright and enlarged as you bring your face towards the mirror, the mirror is ___________.

The diameter of a brass rod is 4 mm and Young’s modulus of brass is 9×1010Nm2. The force required to stretch by 0.1% of its length is

Which of these is a naturally occurring magnet?

Which of the following pairs consist of a conductor and an insulator of electricity?

At the centre of a tornado there is

Why Ventilators are must for a house even though there are windows. Explain?

What do you mean by the term 'photosynthesis ' and why it is named so? [ 2 marks ]

Find the case where heat flow can take place in between the two bodies. Given are the temperatures of both the bodies, measured with two different scales.

A train travels from Nagpur to Chennai with a constant speed of 80 kmph and returns from Chennai to Nagpur with a constant speed of 60 kmph. Find out the average speed of the train.

The application(s) of plane mirror is/are

What does it mean if we say that a turning fork has a frequency of 256Hz?

Definition of one one joule

What does radar and sonar mean

The filament of a bulb glows due to?

Does a sphere shaped magnet has poles ?

In which of the following medium is the velocity of sound equal to zero?

In spectrum obtained with prism which colour is deviated maximum?

Why the sky is blue?

Question 2 (vii) State whether the following statement is true or false. Rubber is a magnetic material.

Harry says water exerts pressure on the bottom of the bucket, but Robert says water exerts pressure on the wall of the bucket. Whose statement is correct?

Where do we use an electromagnet?

Two objects move towards each other till they meet at a point. The speed of first object is 5 ms−1 and the speed of the second object is 10 ms−1. If the distance between the objects is 30 m initially, what is the difference between the distances travelled by the two bodies?

Match the following with suitable answers. SITUATIONTYPE OF IMAGE1Image seen on a cinema screenaVirtual Image2Your image in a polished mirrorbReal image

Which one of the following is written at one corner of speedometer?

Convection _______.

Why are tea cups not preferred to be made of metals?

Pick out the options which work on the same working principle as that of the given device.

A boy is observing his image in a plane mirror. The distance between the mirror and his image is 6 m. If he moves 2 m towards the mirror, then the distance between the boy and his image will be:

When a body is heated, its average kinetic energy

A cube is pushed in such a way that it is sliding on a horizontal surface. Frictional force acting on the cube can be increased by:

What do you mean by an electrical circuit? What are the components of an electrical circuit? [5 MARKS]

If an iron chair and a wooden chair are kept in the sun for a sufficient amount of time and then, are touched, which of them will appear warmer?