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If a source of power 4 kW produces 10^(2...

If a source of power `4 kW` produces `10^(20)` photons`//`second, the radiation belongs to a part of the spectrum called:

A

X-rays

B

ultraviolet rays

C

microwaves

D

`gamma - ` rays

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The correct Answer is:
A
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MOTION-MODERN PHYSICS -1-EXERCISE-4(LEVEL-I)
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  5. Statement I A metallic surface is irradiated by a monochromatic light ...

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  10. A diatomic molecule is made of two masses m(1) and m(2) which are sepa...

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  11. The anode voltage of photocellis kept fixed. The wavelength lambda of ...

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  12. In a hydrogen like atom electron make transition from an energy level ...

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  13. Hydrogen (.(1)H^(1)), Deuterum (.(1)H^(2)), singly ionised Hellium (....

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  14. The radiation corresponding to 3 rarr 2 transition of hydrogen atom f...

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  15. As an electron makes a transition from an excited state to the ground ...

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  16. Radiation of wavelength lamda is incident on a photocell. The fastest ...

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  20. The mass of hydrogen molecule is 3.23 xx 10^(-27)Kg. If 10^23 hydrogen...

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