Question

A student traces the path of a ray of light passing through rectangular glass slab for three different values of angle of incidence (∠i), namely 30°, 45°, 60°. He produces the incident ray and measures the perpendicular distance, l, between the produced incident ray and the emergent ray

Answer 1

Explanation:

(1) 'l' keeps on increasing with increase in angle of incidence

Explanation:

The perpendicular distance 'l' between the extended incident ray and the emergent ray is known as the lateral shift. Lateral shift is directly proportional to the sine of the angle of incidence. i.e. l∝sin il∝sin i

So, lateral shift increases as the angle of incidence increases.