Questions in Ray Optics and Optical Instruments

Select	Question
	The refractive index of a particular material is 1.67 for blue light, 1.65 for yellow light and 1.63 for red light. The dispersive power of the material is .........
	A ray of light is incident on an equilateral glass prism placed on a horizontal table. For minimum deviation which of the following is true
	A beam of light composed of red and green ray is incident obliquely at a point on the face of rectangular glass slab. When coming out on the opposite parallel face, the red and green ray emerge from
	White light is passed through a prism ........... colour shows minimum deviation
	A ray of monochromatic light suffers minimum deviation of ${{38}^{o}}$ while passing through a prism of refracting angle ${{60}^{o}}$. Refractive index of the prism material is
	A ray incident a ${{15}^{o}}$ on one refracting surface of a prism of angle ${{60}^{o}}$, suffers a deviation of ${{55}^{o}}$. What is the angle of emergence
	The spectrum obtained from a sodium vapour lamp is an example of
	The sky would appear red instead of blue if
	Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation
	In absorption spectrum of Na the missing wavelength (s) are