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| 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. infra-red lightB. Visible lightC. X-raysD. Micro-waves |
| Answer» Correct Answer - C | |