6277 + Interview Questions in Physics Page 108 InterviewSolution

5351.	___ in a mercury thermometer is responsible for keeping the level of mercury from falling even after we take it out of our mouth
Answer» ___ in a mercury thermometer is responsible for keeping the level of mercury from falling even after we take it out of our mouth

Discussion

5352.	How does heat transfer take place by convection? Give examples for each.
Answer» How does heat transfer take place by convection? Give examples for each.

Discussion

5353.	Why thermos flask have a stopper made from plastic?
Answer» Why thermos flask have a stopper made from plastic?

Discussion

5354.	Which of the following correctly matches the part of a biogas plant with the process taking place in there?
Answer» Which of the following correctly matches the part of a biogas plant with the process taking place in there?

Discussion

5355.	Experimental investigations show that the intensity of solar radiation is maximum for a wavelength 480 nm in the visible region. Estimate the surface temperature of the sun. Given Wien's constant, b=2.88× 10−3mK.
Answer» Experimental investigations show that the intensity of solar radiation is maximum for a wavelength $480 n m$ in the visible region. Estimate the surface temperature of the sun. Given Wien's constant, $b = 2.88 \times 10^{- 3} m K$ .

Discussion

5356.	In which direction does air exerts pressure?
Answer» In which direction does air exerts pressure?

Discussion

5357.	The initial level of water in a measuring cylinder was 50 ml. When an iron piece of irregular shape is completely immersed, the water level changed to 130ml. Find the volume of iron in m3.
Answer» The initial level of water in a measuring cylinder was 50 ml. When an iron piece of irregular shape is completely immersed, the water level changed to 130ml. Find the volume of iron in $m^{3}$ .

Discussion

5358.	Name the device which is used to measure the distance travelled by a vehicle.
Answer» Name the device which is used to measure the distance travelled by a vehicle.

Discussion

5359.	A spherical black body with a radius of 12 cm radiates 450 W power at 50 K. If the radius was halved and the temperature doubled, the power radiated in watt would be:
Answer» A spherical black body with a radius of 12 cm radiates 450 W power at 50 K. If the radius was halved and the temperature doubled, the power radiated in watt would be:

Discussion

5360.	Blue colour of the sky is due to
Answer» Blue colour of the sky is due to

Discussion

5361.	The image obtained by a mirror is erect and of the same size as that of the object. What type of mirror has been used?
Answer» The image obtained by a mirror is erect and of the same size as that of the object. What type of mirror has been used?

Discussion

5362.	When electric current passes through the filament of a bulb, it gives off: A. Sound B. Heat C. Magnetism D. Light
Answer» When electric current passes through the filament of a bulb, it gives off: A. Sound B. Heat C. Magnetism D. Light

5362.

When electric current passes through the filament of a bulb, it gives off: A. Sound B. Heat C. Magnetism D. Light

Answer»

When electric current passes through the filament of a bulb, it gives off:

A. Sound

B. Heat

C. Magnetism

D. Light

Discussion

5363.	With respect to the given assertion and reason. Choose the correct option. Assertion [A]: With an increase in the temperature of a gas inside a container, its pressure also increases. Reason [R]: Upon heating, the kinetic energy of the gas molecules increases, which in turn results in a greater force exerted on the walls of the container.
Answer» With respect to the given assertion and reason. Choose the correct option. Assertion [A]: With an increase in the temperature of a gas inside a container, its pressure also increases. Reason [R]: Upon heating, the kinetic energy of the gas molecules increases, which in turn results in a greater force exerted on the walls of the container.

Discussion

5364.	Fill in the blanks (a) The object to be electroplated is taken as ___ electrode.
Answer» Fill in the blanks (a) The object to be electroplated is taken as ___ electrode.

Discussion

5365.	Write a short note on: What is meant by lateral inversion
Answer» Write a short note on: What is meant by lateral inversion

5365.

Write a short note on: What is meant by lateral inversion

Answer»

Write a short note on:

What is meant by lateral inversion

Discussion

5366.	Match the contents of column (I) with contents of the column (II). COLUMN IICOLUMN II(i)Unit of mass(a)Meter(ii)Pendulum of a clock(b)Circular motion(iii)Point on a spoke of a rotating wheel(c) kilogram(iv)S.I unit of length(d) Periodic motion
Answer» Match the contents of column (I) with contents of the column (II). $\begin{matrix} COLUMN II & COLUMN II (i)Unit of mass & (a)Meter (ii)Pendulum of a clock & (b)Circular motion (iii)Point on a spoke of a rotating wheel & (c) kilogram (iv)S.I unit of length & (d) Periodic motion \end{matrix}$

5366.

Match the contents of column (I) with contents of the column (II). COLUMN IICOLUMN II(i)Unit of mass(a)Meter(ii)Pendulum of a clock(b)Circular motion(iii)Point on a spoke of a rotating wheel(c) kilogram(iv)S.I unit of length(d) Periodic motion

Answer»

Match the contents of column (I) with contents of the column (II).

$\begin{matrix} COLUMN II & COLUMN II (i)Unit of mass & (a)Meter (ii)Pendulum of a clock & (b)Circular motion (iii)Point on a spoke of a rotating wheel & (c) kilogram (iv)S.I unit of length & (d) Periodic motion \end{matrix}$

Discussion

5367.	What is convection?And also give an example
Answer» What is convection?And also give an example

Discussion

5368.	The factor/factors that is/are directly responsible for winds:
Answer» The factor/factors that is/are directly responsible for winds:

Discussion

5369.	Which of the following statements is not true about diamonds?
Answer» Which of the following statements is not true about diamonds?

Discussion

5370.	A uniform spring whose unstretched length is l, has a force constant K. The spring is cut into two pieces of unstretched length l1 and l2 , where l2l1=n, n being an integer. Now a mass m is made to oscillate with first spring. The time period of its oscillation would be
Answer» A uniform spring whose unstretched length is $l$ , has a force constant K. The spring is cut into two pieces of unstretched length $l_{1}$ and $l_{2}$ , where $\frac{l_{2}}{l_{1}} = n$ , n being an integer. Now a mass m is made to oscillate with first spring. The time period of its oscillation would be

Discussion

5371.	Why speed of sound is maximum in solids?
Answer» Why speed of sound is maximum in solids?

Discussion

5372.	What is the probability that in a compound, if the first element is non-metal, then the second element is also a non-metal?
Answer» What is the probability that in a compound, if the first element is non-metal, then the second element is also a non-metal?

Discussion

5373.	The clinical thermometer can be used to find out temperature of:
Answer» The clinical thermometer can be used to find out temperature of:

Discussion

5374.	In isothermic process, which statement is wrong
Answer» In isothermic process, which statement is wrong

Discussion

5375.	There are two mutually perpendicular forces acting on an object. One force acts in the direction of motion of the object and the direction of other force is perpendicular to the motion. During this interval, the kinetic energy of the body changes from 25 J to 100 J. The work done by the force acting perpendicular to the direction of the object is:
Answer» There are two mutually perpendicular forces acting on an object. One force acts in the direction of motion of the object and the direction of other force is perpendicular to the motion. During this interval, the kinetic energy of the body changes from 25 J to 100 J. The work done by the force acting perpendicular to the direction of the object is:

Discussion

5376.	Why do echoes produced in an empty auditorium usually decrease when it is full of people?
Answer» Why do echoes produced in an empty auditorium usually decrease when it is full of people?

Discussion

5377.	Good evening sir / mam a question says in the absence of refrigerator butter is kept wrapped in a wet cloth during summer. Give reason Thank you
Answer» Good evening sir / mam a question says in the absence of refrigerator butter is kept wrapped in a wet cloth during summer. Give reason Thank you

Discussion

5378.	In the given figure, the relation between angle OPA and angle OPB is
Answer» In the given figure, the relation between angle OPA and angle OPB is

5378.

In the given figure, the relation between angle OPA and angle OPB is

Answer»

In the given figure, the relation between angle OPA and angle OPB is

Discussion

5379.	Calculate the number of molecules and number of atoms present in 11.2 litres of O2 at NTP.
Answer» Calculate the number of molecules and number of atoms present in 11.2 litres of $O_{2}$ at NTP.

Discussion

5380.	What do we mean by weak nuclear force and strong nuclear force? Explain their characteristics.
Answer» What do we mean by weak nuclear force and strong nuclear force? Explain their characteristics.

Discussion

5381.	There are _____ components of white light.
Answer» There are _____ components of white light.

Discussion

5382.	Question 4 A bus travels 54 km in 90 minutes. The speed of the bus is (a) 0.6 m/s (b) 10 m/s (c) 5.4 m/s (d) 3.6 m/s
Answer» Question 4 A bus travels 54 km in 90 minutes. The speed of the bus is (a) 0.6 m/s (b) 10 m/s (c) 5.4 m/s (d) 3.6 m/s

5382.

Question 4 A bus travels 54 km in 90 minutes. The speed of the bus is (a) 0.6 m/s (b) 10 m/s (c) 5.4 m/s (d) 3.6 m/s

Answer»

Question 4

A bus travels 54 km in 90 minutes. The speed of the bus is

(a) 0.6 m/s

(b) 10 m/s

(c) 5.4 m/s

(d) 3.6 m/s

Discussion

5383.	The length of a metal wire is l1 when the tension in it is T1 and is l2 when the tension is T2. The natural length of the wire is
Answer» The length of a metal wire is $l_{1}$ when the tension in it is $T_{1}$ and is $l_{2}$ when the tension is $T_{2}$ . The natural length of the wire is

Discussion

5384.	What is a sundial
Answer» What is a sundial

Discussion

5385.	Following are the observations of changes that have taken place. Classify them into chemical change or a physical change. [5 MARKS] 1. The change is temporary and can be reversed by changing the conditions in most of the cases. 2. New substance(s) is/are formed. 3. The chemical properties of the original substance remain the same. 4. There is an exchange of energy during this change which means that heat and light may be given out or absorbed. 5. As a result of the change, there may or may not be any change in the energy possessed by the original substance. 6. There is no change in the chemical composition of the original substance. 7. The change is permanent and cannot be reversed by changing the conditions or through ordinary physical processes. 8. There may or may not be any change in the state, size, shape, colour, and smell of the substance that undergoes this change. 9. The composition and the properties of the parent substance or substances change. 10. There is usually a change in the mass of the parent substance/s as well.
Answer» Following are the observations of changes that have taken place. Classify them into chemical change or a physical change. [5 MARKS] 1. The change is temporary and can be reversed by changing the conditions in most of the cases. 2. New substance(s) is/are formed. 3. The chemical properties of the original substance remain the same. 4. There is an exchange of energy during this change which means that heat and light may be given out or absorbed. 5. As a result of the change, there may or may not be any change in the energy possessed by the original substance. 6. There is no change in the chemical composition of the original substance. 7. The change is permanent and cannot be reversed by changing the conditions or through ordinary physical processes. 8. There may or may not be any change in the state, size, shape, colour, and smell of the substance that undergoes this change. 9. The composition and the properties of the parent substance or substances change. 10. There is usually a change in the mass of the parent substance/s as well.

Discussion

5386.	The increase in area of a particular solid on heating is called
Answer» The increase in area of a particular solid on heating is called

Discussion

5387.	What is a tornado and how is it formed? What are some safety measures we can take to be safe from a tornado? [5 MARKS]
Answer» What is a tornado and how is it formed? What are some safety measures we can take to be safe from a tornado? [5 MARKS]

Discussion

5388.	Deep water runs almost still. What does it explain?
Answer» Deep water runs almost still. What does it explain?

Discussion

5389.	Which of the following statements is a characteristic of diverging lens?
Answer» Which of the following statements is a characteristic of diverging lens?

Discussion

5390.	To make the current flow through the circuit, plugs and sockets___.
Answer» To make the current flow through the circuit, plugs and sockets___.

Discussion

5391.	When we are in water, can we feel the pressure difference
Answer» When we are in water, can we feel the pressure difference

Discussion

5392.	A sphere, a cube and a thin circular plate have the same mass and are made of the same material. All of them are heated to the same temperature. The rate of cooling is
Answer» A sphere, a cube and a thin circular plate have the same mass and are made of the same material. All of them are heated to the same temperature. The rate of cooling is

Discussion

5393.	Which of the two requires an electric cell for its working : a Quartz clock or a pendulum clock??
Answer» Which of the two requires an electric cell for its working : a Quartz clock or a pendulum clock??

Discussion

5394.	A baseball is popped straight up into the air and has a hang-time of 6 s. Determine the maximum height to which the ball rises?
Answer» A baseball is popped straight up into the air and has a hang-time of 6 s. Determine the maximum height to which the ball rises?

Discussion

5395.	Is there really a need for so much diversity in plants and animals in the forest? Justify. [2 MARKS]
Answer» Is there really a need for so much diversity in plants and animals in the forest? Justify. [2 MARKS]

Discussion

5396.	How many seconds are there in 45 minutes?
Answer» How many seconds are there in 45 minutes?

Discussion

5397.	Why do the clouds appear white in colour?
Answer» Why do the clouds appear white in colour?

Discussion

5398.	How many cm3 of milk can a hemispherical bowl of diameter 10.5 cm hold? [Assume π=227] Note : Hemisphere is half a sphere.
Answer» How many $c m^{3}$ of milk can a hemispherical bowl of diameter 10.5 cm hold? $[A s s u m e π = \frac{22}{7}]$ Note : Hemisphere is half a sphere.

5398.

How many cm3 of milk can a hemispherical bowl of diameter 10.5 cm hold? [Assume π=227] Note : Hemisphere is half a sphere.

Answer»

How many $c m^{3}$ of milk can a hemispherical bowl of diameter 10.5 cm hold?
$[A s s u m e π = \frac{22}{7}]$

Note : Hemisphere is half a sphere.

Discussion

5399.	Fluid friction is ___ offered by a fluid against the relative motion of its layers.
Answer» Fluid friction is ___ offered by a fluid against the relative motion of its layers.

Discussion

5400.	Even though stone and Earth attract each other, Earth does not appear move because of its:
Answer» Even though stone and Earth attract each other, Earth does not appear move because of its:

Discussion

Explore topic-wise InterviewSolutions in .

___ in a mercury thermometer is responsible for keeping the level of mercury from falling even after we take it out of our mouth

How does heat transfer take place by convection? Give examples for each.

Why thermos flask have a stopper made from plastic?

Which of the following correctly matches the part of a biogas plant with the process taking place in there?

Experimental investigations show that the intensity of solar radiation is maximum for a wavelength 480 nm in the visible region. Estimate the surface temperature of the sun. Given Wien's constant, b=2.88× 10−3mK.

In which direction does air exerts pressure?

The initial level of water in a measuring cylinder was 50 ml. When an iron piece of irregular shape is completely immersed, the water level changed to 130ml. Find the volume of iron in m3.

Name the device which is used to measure the distance travelled by a vehicle.

A spherical black body with a radius of 12 cm radiates 450 W power at 50 K. If the radius was halved and the temperature doubled, the power radiated in watt would be:

Blue colour of the sky is due to

The image obtained by a mirror is erect and of the same size as that of the object. What type of mirror has been used?

When electric current passes through the filament of a bulb, it gives off: A. Sound B. Heat C. Magnetism D. Light

Fill in the blanks (a) The object to be electroplated is taken as ___ electrode.

Write a short note on: What is meant by lateral inversion

Match the contents of column (I) with contents of the column (II). COLUMN IICOLUMN II(i)Unit of mass(a)Meter(ii)Pendulum of a clock(b)Circular motion(iii)Point on a spoke of a rotating wheel(c) kilogram(iv)S.I unit of length(d) Periodic motion

What is convection?And also give an example

The factor/factors that is/are directly responsible for winds:

Which of the following statements is not true about diamonds?

A uniform spring whose unstretched length is l, has a force constant K. The spring is cut into two pieces of unstretched length l1 and l2 , where l2l1=n, n being an integer. Now a mass m is made to oscillate with first spring. The time period of its oscillation would be

Why speed of sound is maximum in solids?

What is the probability that in a compound, if the first element is non-metal, then the second element is also a non-metal?

The clinical thermometer can be used to find out temperature of:

In isothermic process, which statement is wrong

Why do echoes produced in an empty auditorium usually decrease when it is full of people?

Good evening sir / mam a question says in the absence of refrigerator butter is kept wrapped in a wet cloth during summer. Give reason Thank you

In the given figure, the relation between angle OPA and angle OPB is

Calculate the number of molecules and number of atoms present in 11.2 litres of O2 at NTP.

What do we mean by weak nuclear force and strong nuclear force? Explain their characteristics.

There are _____ components of white light.

Question 4 A bus travels 54 km in 90 minutes. The speed of the bus is (a) 0.6 m/s (b) 10 m/s (c) 5.4 m/s (d) 3.6 m/s

The length of a metal wire is l1 when the tension in it is T1 and is l2 when the tension is T2. The natural length of the wire is

What is a sundial

The increase in area of a particular solid on heating is called

What is a tornado and how is it formed? What are some safety measures we can take to be safe from a tornado? [5 MARKS]

Deep water runs almost still. What does it explain?

Which of the following statements is a characteristic of diverging lens?

To make the current flow through the circuit, plugs and sockets___.

When we are in water, can we feel the pressure difference

A sphere, a cube and a thin circular plate have the same mass and are made of the same material. All of them are heated to the same temperature. The rate of cooling is

Which of the two requires an electric cell for its working : a Quartz clock or a pendulum clock??

A baseball is popped straight up into the air and has a hang-time of 6 s. Determine the maximum height to which the ball rises?

Is there really a need for so much diversity in plants and animals in the forest? Justify. [2 MARKS]

How many seconds are there in 45 minutes?

Why do the clouds appear white in colour?

How many cm3 of milk can a hemispherical bowl of diameter 10.5 cm hold? [Assume π=227] Note : Hemisphere is half a sphere.

Fluid friction is ___ offered by a fluid against the relative motion of its layers.

Even though stone and Earth attract each other, Earth does not appear move because of its: