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Choose the correct alternative and rewrite the following sentence.
A ray of light strikes the glass slab at an angle of 50°. What is the angle of incidence?
State the dependence of angle of deviation On the refractive index of the material of the prism.
Light passes through a rectangular glass slab and through a triangular glass prism. In what way does the direction of the two emergent beams differ and why?
Which of the above wavelengths has a higher frequency?
How must light travel out of a substance if it is not going to be refracted?
How is the refractive index of a medium related to the speed of light in it?
Fill in the blanks to complete the following sentence
When light travels from a denser to a rarer medium, its speed ……………….
-
- the angle of refraction and
- the angle of deviation for the ray?
Write the approximate values of speed of light in (i) air and (ii) glass. Use these values to calculate the refractive index of glass with respect to air.
