Knockout JEE Main April 2021 (One Month)
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If a source of power 4 kW produces 1020 photons/second, the radiation belongs to a part of the spectrum called
Option 1)
|
Option 2)
|
Option 3)
ultraviolet rays |
Option 4)
microwaves |
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As we learnt in
Energy of a photon -
- wherein
If wavelength of photon is
& n is the number of photon emitted per second then
This wavelength represent X-rays hence correct answer is 2
Option 1)
This is an incorrect option.
Option 2)
This is the correct option.
Option 3)
ultraviolet rays
This is an incorrect option.
Option 4)
microwaves
This is an incorrect option.