1.

When ultraviolet radiation is incident on a surface, no photoelectrons are emitted. If another beam causes photoelectrons to be emitted from the surface, it may consist of (i) radio waves (ii) infrared rays (iii) X-rays (iv) gamma raysA. (i),(ii)B. (ii),(iii)C. (i),(iv)D. (iii),(iv)

Answer» Correct Answer - D
`upsilon_("gamma")gtupsilon_(X-rays)gtupsilon_("ultraviolet")`


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