Kirchhoff Law in Hindi MCQs for Students

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Kirchhoff Law in Hindi. We covered all the Kirchhoff Law in Hindi in this post for free so that you can practice well for the exam.

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Mock Test on Kirchhoff Law for Students

Which of the following statement is wrong?

A polished metal with rough black spot on it is heated to about 1400 K and quickly taken to a dark room. Which one of the following statement will be true?

As compared to a person with white skin another person with dark skin, will experience :

Woolen clothes are used in winter season because woolen clothes :

A hot body will radiate maximum energy if its surface is :

Four identical copper cylinders are painted, if they are all heated to the same temperature and left in vacuum which will cool most rapidly?

The best laboratory approximation to an ideal black body is :

The total radiation emitted by a perfectly black body is proportional to :

Two thermometers A and B are exposed to sunlight. The valve of A is painted black but that of B is not painted. The correct statement regarding this case is :

Tea pots are highly polished :

A good absorber of heat is a good radiator of heat also is :

The essence of Kirchhoff's law is that good absorber must be a :

Good absorbers of heat are :

Mock Test on Kirchhoff Law for Students

Which of the following statement is wrong?

(A) Rough surfaces are better radiators than smooth surface

(B) Highly polished mirror like surfaces are very good radiators

(D) Black surfaces are better radiators than white ones

Option b - Highly polished mirror like surfaces are very good radiators

A polished metal with rough black spot on it is heated to about 1400 K and quickly taken to a dark room. Which one of the following statement will be true?

(A) The spot will appear brighter than the plate

(B) The spot will appear darker than the plate

(D) The spot and plate will not be visible in dark

Option a - The spot will appear brighter than the plate

As compared to a person with white skin another person with dark skin, will experience :

(A) Less heat and more cold

(B) More heat and more cold

(D) Less heat and less cold

Option b - More heat and more cold

Woolen clothes are used in winter season because woolen clothes :

(A) Are good sources for producing heat

(B) Absorb heat from surroundings

(D) Provide heat to body continuously

Option c - Are bad conductors of heat

A hot body will radiate maximum energy if its surface is :

(A) White and polished

(B) Black and polished

(D) Black and rough

Option d - Black and rough

Four identical copper cylinders are painted, if they are all heated to the same temperature and left in vacuum which will cool most rapidly?

(A) Painted shiny white

(B) Painted shiny black

(D) Painted rough white

Option c - Painted rough black

The best laboratory approximation to an ideal black body is :

(A) A lump of charcoal heated to a high temperature

(B) A glass surface coated with coaltar

(D) A hollow enclosure blackened inside with shoot and have a small hole

Option d - A hollow enclosure blackened inside with shoot and have a small hole

The total radiation emitted by a perfectly black body is proportional to :

(A) Temperature on ideal gas scale

(B) Fourth root of temperature on ideal gas scale

(D) Square of temperature on ideal gas scale

Option c - Fourth power of temperature on ideal gas scale

Two thermometers A and B are exposed to sunlight. The valve of A is painted black but that of B is not painted. The correct statement regarding this case is :

(A) Temperature of B will rise faster

(B) Temperature of A will remain more than B

(D) Temperature of A will rise faster than B but the final temperature will be same in both

Option d - Temperature of A will rise faster than B but the final temperature will be same in both

Tea pots are highly polished :

(A) Because procleain takes high polish

(B) So that they may reflect rays from outside

(D) So that they may absorb all radiation from outside

Option b - So that they may reflect rays from outside

A good absorber of heat is a good radiator of heat also is :

(A) Stefan's law

(B) Kirchhoff's law

(D) Wien's law

Option c - Kirchhoff's law

The essence of Kirchhoff's law is that good absorber must be a :

(A) Bad radiator

(B) Bad conductor

(D) Good radiator

Option d - Good radiator

Good absorbers of heat are :

(A) Poor emitters

(B) Non- emitters

(D) Highly polished

Option c - Good emitters

We covered all the kirchhoff law in hindi above in this post for free so that you can practice well for the exam.

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Mock Test on Kirchhoff Law for Students

Which of the following statement is wrong?

A polished metal with rough black spot on it is heated to about 1400 K and quickly taken to a dark room. Which one of the following statement will be true?

As compared to a person with white skin another person with dark skin, will experience :

Woolen clothes are used in winter season because woolen clothes :

A hot body will radiate maximum energy if its surface is :

Four identical copper cylinders are painted, if they are all heated to the same temperature and left in vacuum which will cool most rapidly?

The best laboratory approximation to an ideal black body is :

The total radiation emitted by a perfectly black body is proportional to :

Two thermometers A and B are exposed to sunlight. The valve of A is painted black but that of B is not painted. The correct statement regarding this case is :

Tea pots are highly polished :

A good absorber of heat is a good radiator of heat also is :

The essence of Kirchhoff's law is that good absorber must be a :

Good absorbers of heat are :

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