Home
Class 11
PHYSICS
Assertion : All bodies emit radiant en...

Assertion : All bodies emit radiant energy whether they are solid, liquid or gases.
Reason : Black bodies absorb and emit radiant energy better than bodies of lighter colours.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true and reason is not the correct explanation of assertion.

C

If assertion is true and reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER

    NCERT FINGERTIPS|Exercise NCERT Exemplar|8 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTIONS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • THERMODYNAMICS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

A black body emits

Assertion : A normal body can radiate energy more than a perfectly black body. Reason : A perfectly black body is always black in colour.

If an athermanous body absorbs 20% of the incident radiant energy, then reflection coefficient of the body is

Fill in the blanks A black body absorbs _________ heat energy than a white body

Assertion : All black coloured objects are considered black bodies. Reason : Black colour is a good absorber of heat

A: The reflectance of a black body is zero. R: Black body absorbs all radiations incident on it.

A black body A at a temperature of 527^(@)C , emits radiant energy at the rate of 16 watt. Another black body B at temperature 127^(@)C , emits radiant energy at the rate 8 watt in the same surrounding. Compare the surface areas of A and B.

Assertion : Coefficient of absorption of radiation of an ideal black body is 1 . Reason : An ideal black body emits radiation of all wavelengths.

The temperature at which a black body ceases to radiate energy is .