Embibe Experts Solutions for Chapter: Wave Optics, Exercise 1: Exercise

Which term is not related to the Huygens wave principle.

Which of the following is the correct statement?

The ray of light:

In the adjoining diagram, a wavefront $\mathrm{AB}$ is moving in the air, is incident on a plane glass surface $\mathrm{XY}$, its position $\mathrm{CD}$ after refraction through a glass slab is shown along the normals drawn at  $\mathrm{A} \mathrm{and} \mathrm{D}$.

The refractive index of the glass w.r.t air ${}_{\mathrm{g}}{}^{\mathrm{a}}\mathrm{\mu }$ will be equal to:

When plane wavefronts incident on the convex lens then emerging wavefront is

A ray travels from point $A$ to $\mathrm{B}$ from a rarer to denser medium. Of the four paths shown in the figure, which is the path for the least time?

For a constructive interference the path difference is given as

For a destructive interference the path difference is given as

While both light and sound show wave character, diffraction is much harder to observe in light. This is because: