6277 + Interview Questions in Physics Page 88 InterviewSolution

4351.	Statements: All letters are black. All blacks are blue. All blues are green. Conclusions: I. No letter is green. II. Most blue are blacks.
Answer» Statements: All letters are black. All blacks are blue. All blues are green. Conclusions: I. No letter is green. II. Most blue are blacks.

4351.

Statements: All letters are black. All blacks are blue. All blues are green. Conclusions: I. No letter is green. II. Most blue are blacks.

Answer»

Statements:

All letters are black.

All blacks are blue.

All blues are green.

Conclusions:

I. No letter is green.

II. Most blue are blacks.

Discussion

4352.	If the change in kinetic energy of a car is 1200 J in 2 minutes then the power generated by its engine is:
Answer» If the change in kinetic energy of a car is 1200 J in 2 minutes then the power generated by its engine is:

Discussion

4353.	Both conductors and insulators have positive and negative charges, but conductors allow negative charge to flow but insulators don't, why?
Answer» Both conductors and insulators have positive and negative charges, but conductors allow negative charge to flow but insulators don't, why?

Discussion

4354.	The following are the observations of changes that have taken place. Align them to either chemical change or a physical change. The change is temporary and can be reversed by changing the conditions in most of the cases New substance(s) is/are formed. The chemical properties of the original substance remain the same. There is an exchange of energy during this change.Which means that heat and light may be given out or absorbed. As a result of the change there may or may not be any change in the energy possessed by the original substance There is no change in the chemical composition of the original substance. The change is permanent and cannot be reversed by changing the conditions or through ordinary physical processes. There may or maynot be any change in the state , size, shape, colour,and smell of the substance that undergoes this change. The composition and the properties of the parent substance or substances changes There is usually a change in the mass of the of the parent substance/s as well No new substance is formed. [5 MARKS]
Answer» The following are the observations of changes that have taken place. Align them to either chemical change or a physical change. The change is temporary and can be reversed by changing the conditions in most of the cases New substance(s) is/are formed. The chemical properties of the original substance remain the same. There is an exchange of energy during this change.Which means that heat and light may be given out or absorbed. As a result of the change there may or may not be any change in the energy possessed by the original substance There is no change in the chemical composition of the original substance. The change is permanent and cannot be reversed by changing the conditions or through ordinary physical processes. There may or maynot be any change in the state , size, shape, colour,and smell of the substance that undergoes this change. The composition and the properties of the parent substance or substances changes There is usually a change in the mass of the of the parent substance/s as well No new substance is formed. [5 MARKS]

Discussion

4355.	Why thermometers only mesures hotness of the body not?
Answer» Why thermometers only mesures hotness of the body not?

Discussion

4356.	Which of the following is true regarding the formation of a battery?
Answer» Which of the following is true regarding the formation of a battery?

Discussion

4357.	Which of the following statements are True?
Answer» Which of the following statements are True?

Discussion

4358.	A block is pushed on the ground with an initial velocity of 20m/s, it stops after 6 seconds. What is the retardation of the block?
Answer» A block is pushed on the ground with an initial velocity of $20 m / s$ , it stops after 6 seconds. What is the retardation of the block?

Discussion

4359.	Suppose our school is 1 km away from our house, and we go to school in the morning, and in the afternoon we come back. Then, the total displacement for the entire trip is
Answer» Suppose our school is 1 km away from our house, and we go to school in the morning, and in the afternoon we come back. Then, the total displacement for the entire trip is

4359.

Suppose our school is 1 km away from our house, and we go to school in the morning, and in the afternoon we come back. Then, the total displacement for the entire trip is

Answer»

Suppose our school is 1 km away from our house, and we go to school in the morning, and in the afternoon we come back. Then, the total displacement for the entire trip is

Discussion

4360.	The brightness of light emitted by a bulb is observed to decrease when an electric heater is connected in series with it .Suggest the likely reason for this observation
Answer» The brightness of light emitted by a bulb is observed to decrease when an electric heater is connected in series with it .Suggest the likely reason for this observation

Discussion

4361.	What is the relative speed when a train with a speed of 56 Km/hr (i) crosses a bridge of length 150m (ii) when it crosses another train of speed 36 Km/hr which also moves in the same direction.
Answer» What is the relative speed when a train with a speed of 56 Km/hr (i) crosses a bridge of length 150m (ii) when it crosses another train of speed 36 Km/hr which also moves in the same direction.

4361.

What is the relative speed when a train with a speed of 56 Km/hr (i) crosses a bridge of length 150m (ii) when it crosses another train of speed 36 Km/hr which also moves in the same direction.

Answer»

What is the relative speed when a train with a speed of 56 Km/hr

(i) crosses a bridge of length 150m

(ii) when it crosses another train of speed 36 Km/hr which also moves in the same direction.

Discussion

4362.	A body having 5 kg mass is traveling with a certain velocity and has 10 kg m/s momentum. What will be its kinetic energy?
Answer» A body having $5 k g$ mass is traveling with a certain velocity and has $10 k g m / s$ momentum. What will be its kinetic energy?

Discussion

4363.	If you are stuck in a forest which source of energy will you prefer and why?
Answer» If you are stuck in a forest which source of energy will you prefer and why?

Discussion

4364.	The unit of quantity on which loudness of sound depends is
Answer» The unit of quantity on which loudness of sound depends is

Discussion

4365.	A force acts in the direction of motion of the object. During this interval the kinetic energy of the body changes from 25J to 100J. The work done by the force is
Answer» A force acts in the direction of motion of the object. During this interval the kinetic energy of the body changes from $25 J$ to $100 J$ . The work done by the force is

Discussion

4366.	The degree of hotness or coldness of a body or environment is called :
Answer» The degree of hotness or coldness of a body or environment is called :

Discussion

4367.	Question 5 A rainbow can be seen in the sky (a) when the sun is in front of you. (b) when the sun is behind you. (c) when the sun is overhead. (d) only at the time of sun rise.
Answer» Question 5 A rainbow can be seen in the sky (a) when the sun is in front of you. (b) when the sun is behind you. (c) when the sun is overhead. (d) only at the time of sun rise.

4367.

Question 5 A rainbow can be seen in the sky (a) when the sun is in front of you. (b) when the sun is behind you. (c) when the sun is overhead. (d) only at the time of sun rise.

Answer»

Question 5

A rainbow can be seen in the sky

(a) when the sun is in front of you.

(b) when the sun is behind you.

(c) when the sun is overhead.

(d) only at the time of sun rise.

Discussion

4368.	What possibilities can arise when a light beam strikes a surface?
Answer» What possibilities can arise when a light beam strikes a surface?

Discussion

4369.	The container shown below has 9 particles inside it. Each particle has a mass of 3 g. The volume of the container is 27 cm3 Calculate the density of the container (assume the box has no air in it).
Answer» The container shown below has $9$ particles inside it. Each particle has a mass of $3 g$ . The volume of the container is $27 c m^{3}$ Calculate the density of the container (assume the box has no air in it).

Discussion

4370.	What is infinity in mirrors?
Answer» What is infinity in mirrors?

Discussion

4371.	Which of the following statements are true regarding clouds during a thunderstorm? 1. Upper parts of the clouds are positively charged. 2. Cloud is electrically neutral (no charge) everywhere. 3. Upper parts of clouds are negatively charged. 4. Lower parts of clouds are negatively charged.
Answer» Which of the following statements are true regarding clouds during a thunderstorm? 1. Upper parts of the clouds are positively charged. 2. Cloud is electrically neutral (no charge) everywhere. 3. Upper parts of clouds are negatively charged. 4. Lower parts of clouds are negatively charged.

Discussion

4372.	What is the boiling point of milk.
Answer» What is the boiling point of milk.

Discussion

4373.	which type of reaction is this and balance it properly: C8H18 + O2 → CO2+ H2O.
Answer» which type of reaction is this and balance it properly: C₈H₁₈+ O₂→ CO₂+ H₂O.

Discussion

4374.	Why mercury is used in thermometer write in five points?
Answer» Why mercury is used in thermometer write in five points?

Discussion

4375.	A ray of light is incident on a plane mirror and the angle of reflection is 50 degrees. Calculate the angle between the incident ray and the reflected ray.
Answer» A ray of light is incident on a plane mirror and the angle of reflection is 50 degrees. Calculate the angle between the incident ray and the reflected ray.

Discussion

4376.	What do you mean by average speed? State the S.I. unit of speed. [2 MARKS]
Answer» What do you mean by average speed? State the S.I. unit of speed. [2 MARKS]

Discussion

4377.	Water starts boiling at ____.
Answer» Water starts boiling at ____.

Discussion

4378.	Which of the following is /are natural phenomenon?
Answer» Which of the following is /are natural phenomenon?

Discussion

4379.	What is the correct value of atmospheric pressure?
Answer» What is the correct value of atmospheric pressure?

Discussion

4380.	A compass has a small balanced pointer that always points North-South when suspended freely. This is because :
Answer» A compass has a small balanced pointer that always points North-South when suspended freely. This is because :

Discussion

4381.

For the data given below: Distance (from origin) Time 0 9:00 AM 10 9:30 AM 20 10:00 AM 40 10:30 AM Select the graph that most appropriately represents the above data.

Answer»

For the data given below:

Distance (from origin)	Time
0	9:00 AM
10	9:30 AM
20	10:00 AM
40	10:30 AM

Select the graph that most appropriately represents the above data.

Discussion

4382.	Red rose is seen ___ in green light.
Answer» Red rose is seen ___ in green light.

Discussion

4383.	Why mercury is used as a thermometric liquid? State the reasons. [5 MARKS]
Answer» Why mercury is used as a thermometric liquid? State the reasons. [5 MARKS]

Discussion

4384.	Our shadows are longer in the morning and evening. Why?
Answer» Our shadows are longer in the morning and evening. Why?

Discussion

4385.	Who discovered light ?
Answer» Who discovered light ?

Discussion

4386.	The rainbow comes and disappears after sometime.How and why?
Answer» The rainbow comes and disappears after sometime.How and why?

Discussion

4387.	Sound will travel in which of the following?
Answer» Sound will travel in which of the following?

Discussion

4388.	The SI unit of mass is___
Answer» The SI unit of mass is___

Discussion

4389.	''Charging by contact is not a reliable method because it often gives the charge opposite to that expected (in an electroscope)''. How?
Answer» ''Charging by contact is not a reliable method because it often gives the charge opposite to that expected (in an electroscope)''. How?

Discussion

4390.	__ is mainly produced in factories, thermal power plants, iron and steel industries.
Answer» __ is mainly produced in factories, thermal power plants, iron and steel industries.

Discussion

4391.	Can we say that a charged object attracts an uncharged object by first charging it through induction? Please explain.
Answer» Can we say that a charged object attracts an uncharged object by first charging it through induction? Please explain.

Discussion

4392.	The phenomenon of the splitting up of white light into its component colours is called ___.
Answer» The phenomenon of the splitting up of white light into its component colours is called ___.

Discussion

4393.	From the law of conservation of energy, we can infer that
Answer» From the law of conservation of energy, we can infer that

Discussion

4394.	Which of the following is a warm current?
Answer» Which of the following is a warm current?

Discussion

4395.	If nichrome has the heating effects of current then why is it not used in bulb as the filament?
Answer» If nichrome has the heating effects of current then why is it not used in bulb as the filament?

Discussion

4396.	To make the bulb glow, it is advisable___
Answer» To make the bulb glow, it is advisable___

Discussion

4397.	A paper cup full of hot soup lying on a table is which mode of transfer of heat
Answer» A paper cup full of hot soup lying on a table is which mode of transfer of heat

Discussion

4398.	Why are we advised not to fill air into a cycle tyre very tightly during the summers?
Answer» Why are we advised not to fill air into a cycle tyre very tightly during the summers?

Discussion

4399.	Does wind have any other name
Answer» Does wind have any other name

Discussion

4400.	What happens when air gets heated up?
Answer» What happens when air gets heated up?

Discussion

Explore topic-wise InterviewSolutions in .

Statements: All letters are black. All blacks are blue. All blues are green. Conclusions: I. No letter is green. II. Most blue are blacks.

If the change in kinetic energy of a car is 1200 J in 2 minutes then the power generated by its engine is:

Both conductors and insulators have positive and negative charges, but conductors allow negative charge to flow but insulators don't, why?

Why thermometers only mesures hotness of the body not?

Which of the following is true regarding the formation of a battery?

Which of the following statements are True?

A block is pushed on the ground with an initial velocity of 20m/s, it stops after 6 seconds. What is the retardation of the block?

Suppose our school is 1 km away from our house, and we go to school in the morning, and in the afternoon we come back. Then, the total displacement for the entire trip is

The brightness of light emitted by a bulb is observed to decrease when an electric heater is connected in series with it .Suggest the likely reason for this observation

What is the relative speed when a train with a speed of 56 Km/hr (i) crosses a bridge of length 150m (ii) when it crosses another train of speed 36 Km/hr which also moves in the same direction.

A body having 5 kg mass is traveling with a certain velocity and has 10 kg m/s momentum. What will be its kinetic energy?

If you are stuck in a forest which source of energy will you prefer and why?

The unit of quantity on which loudness of sound depends is

A force acts in the direction of motion of the object. During this interval the kinetic energy of the body changes from 25J to 100J. The work done by the force is

The degree of hotness or coldness of a body or environment is called :

Question 5 A rainbow can be seen in the sky (a) when the sun is in front of you. (b) when the sun is behind you. (c) when the sun is overhead. (d) only at the time of sun rise.

What possibilities can arise when a light beam strikes a surface?

The container shown below has 9 particles inside it. Each particle has a mass of 3 g. The volume of the container is 27 cm3 Calculate the density of the container (assume the box has no air in it).

What is infinity in mirrors?

Which of the following statements are true regarding clouds during a thunderstorm? 1. Upper parts of the clouds are positively charged. 2. Cloud is electrically neutral (no charge) everywhere. 3. Upper parts of clouds are negatively charged. 4. Lower parts of clouds are negatively charged.

What is the boiling point of milk.

which type of reaction is this and balance it properly: C8H18 + O2 → CO2+ H2O.

Why mercury is used in thermometer write in five points?

A ray of light is incident on a plane mirror and the angle of reflection is 50 degrees. Calculate the angle between the incident ray and the reflected ray.

What do you mean by average speed? State the S.I. unit of speed. [2 MARKS]

Water starts boiling at ____.

Which of the following is /are natural phenomenon?

What is the correct value of atmospheric pressure?

A compass has a small balanced pointer that always points North-South when suspended freely. This is because :

For the data given below: Distance (from origin) Time 0 9:00 AM 10 9:30 AM 20 10:00 AM 40 10:30 AM Select the graph that most appropriately represents the above data.

Red rose is seen ___ in green light.

Why mercury is used as a thermometric liquid? State the reasons. [5 MARKS]

Our shadows are longer in the morning and evening. Why?

Who discovered light ?

The rainbow comes and disappears after sometime.How and why?

Sound will travel in which of the following?

The SI unit of mass is___

''Charging by contact is not a reliable method because it often gives the charge opposite to that expected (in an electroscope)''. How?

__ is mainly produced in factories, thermal power plants, iron and steel industries.

Can we say that a charged object attracts an uncharged object by first charging it through induction? Please explain.

The phenomenon of the splitting up of white light into its component colours is called ___.

From the law of conservation of energy, we can infer that

Which of the following is a warm current?

If nichrome has the heating effects of current then why is it not used in bulb as the filament?

To make the bulb glow, it is advisable___

A paper cup full of hot soup lying on a table is which mode of transfer of heat

Why are we advised not to fill air into a cycle tyre very tightly during the summers?

Does wind have any other name

What happens when air gets heated up?