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

Which one of the following statements is correct for a plane mirror?

A $U$-shaped wire is placed before a concave mirror having a radius of curvature $20 \mathrm{cm}$ as shown in the figure. Find the total length of the image.

A short linear object $\mathrm{O}$ is placed on the principal axis of convex mirror of focal length $f$ as shown in the figure. The ratio of transverse magnification to longitudinal magnification is :

An object is placed in front of a convex mirror. Which one of the following statements is correct?

Which of the following is not involved in Rainbow formation?

An achromatic combination of lenses is formed by joining

An achromatic convergent doublet of two lenses in contact has a power of $+2 \mathrm{D}$. The convex lens has power $+5 \mathrm{D}$. What is the ratio of the dispersive powers of the convergent and divergent lenses?

Two lens of power $+4D$ and $-2D$ are placed in contact to form an achromatic doublet. The ratio of their dispersive power is