Saved Bookmarks
| 1. |
Threshold wavelength for sodium is 5 × 10−7 m. Photoelectric emission occurs for light of : (a) any wavelength (b) wavelength above 6 × 10−7 m (c) wavelength below 5 × 10−7 m (d) all frequency below 5 × 1014 Hz |
|
Answer» Correct option (c) wavelength below 5 × 10−7 m Explanation: For photoelectric emission, it is necessary that the wavelength of the incident light is less than threshold value. i.e., λ < λ0 Hence, the photo emission occurs for light of wavelength below 5 × 10−7 m. |
|