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Wave Optics

Question
CBSEENPH12039564
Wired Faculty App

If a source of power 4kW produces 1020 photons/second, the radiation belongs to a part of the spectrum called

  • X -rays

  • ultraviolet rays

  • microwaves

  • γ rays

Solution

A.

X -rays

As power of source = 4 x 103 = 1020 x hv
(∴ P/E = Number of photons)
straight v equals space fraction numerator 4 space straight x space 10 cubed over denominator 10 to the power of 20 space straight x space 6.023 space straight x space 10 to the power of negative 34 end exponent end fraction space straight v space equals space 6.64 space straight x space 10 to the power of 16 space Hz

Some More Questions From Wave Optics Chapter

The positively charged part of the atom possesses most of the mass in ___________ (Rutherford's model/both the models).

Suppose you are given a chance to repeat the alpha-particle scattering experiment using a thin sheet of solid hydrogen in place of the gold foil. (Hydrogen is a solid at temperatures below 14 K.) What results do you expect?

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