AIIMS2009Physics-Astrophysics

AIIMS 2009 Physics Black Holes MCQ Question

Type: MCQ-conceptual-Medium-Class 11

Black holes in orbit around a normal star are detected from the earth due to the frictional heating of infalling gas into the black hole, which can reach temperatures greater than 10⁶ K. Assuming that the infalling gas can be modelled as a blackbody radiator, then the wavelength of maximum power lies

A

in the visible region

B

in the X⁻ray region

C

in the microwave region

D

in the gamma-ray region of electromagnetic spectrum

Correct Answer

Option B

Detailed Explanation

λmT = 2.898 x 10^-3 mK.

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