Transmission Of Heat Question 10
Question: Assertion : The radiation from the sun’s surface varies as the fourth power of its absolute temperature. Reason : The sun is not a black body.
[AIIMS 1999]
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: C
Solution:
At a high temperature (6000 K), the sun acts like a perfect blackbody emitting complete radiation. That’s why the radiation coming from the sun’s surface follows Stefan’s law $ E=\sigma T^{4} $ .
BETA
