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AIIMS2009PhysicsElectromagnetic Waves

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 10^6 ~K . Assuming that the infalling gas can be modelled as a blackbody radiator, then the wavelength of maximum power lies

Options

  1. Ain the visible region
  2. Bin the X-ray region
  3. Cin the the microwave region
  4. Din the gamma-ray region of electromagnetic spectrum

Correct answer

B. in the X-ray region

Step-by-step solution

: _m T=2.898 10⁻³ mK _m= 2.9 10⁻³ 10^6 =2.9 10⁻⁹ ~m =2.9 ~nm .Itliesinthe X-ray region of the electromagnetic spectrum.

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