 
			 
			MCQOPTIONS
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				| 1. | When light is incident on a diffraction grating the zero order principal maximum will be [KCET 2004] | 
| A. | One of the component colours | 
| B. | Absent | 
| C. | There is gravitational effect on the light | 
| D. | White | 
| Answer» E. | |