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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsX-raysEasy2 minPYQ_2009

PhysicsEasysingle choice

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 $1 0^{6} K$ . Assuming that the infalling gas can be modelled as a blackbody radiator, then the wavelength of maximum power lies

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Solution:

$: λ_{m} T = 2.898 \times 1 0^{- 3} mK$ $λ_{m} = \frac{2.9 \times 1 0 ^{- 3}}{1 0 ^{6}} = 2.9 \times 1 0^{- 9} m = 2.9 nm$ .Itliesinthe X-ray region of the electromagnetic spectrum.

Stream:AIIMSSubject:PhysicsTopic:Modern PhysicsSubtopic:X-rays

⏱ 2mℹ️ Source: PYQ_2009

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