Embibe Experts Solutions for Chapter: Light - Reflection and Refraction, Exercise 1: Bihar Board-2018

An object $5 \mathrm{cm}$ in length is placed at a distance of $20 \mathrm{cm}$ in front of a convex mirror of radius of curvature $30 \mathrm{cm}$. Find the position of the image, the nature of the image and size.

If the image of an object is always erect for any distance of the object in front of the mirror, then the mirror is :

Which of the following mirrors is used in the headlight of a car?

Which of the following has the highest refractive index?

Which of the following lenses is known as converging lenses?

Which of the following is the magnification of the lens?

Light enters from air to glass having refractive index $1.50$. What is the speed of the light in the glass? The speed of light in vacuum can be taken as $3\times {10}^8 \mathrm{m} {\mathrm{s}}^{-1}$.

Draw a ray diagram to show image formation of an object placed at $2F$ of a convex lens.