Embibe Experts Solutions for Chapter: Ray Optics, Exercise 6: BEGINNER'S BOX - 6

An object is placed at the distance of 30 cm in front of a convex lens of focal length 10 cm. Find the position of the image, its nature and magnification.

A planoconvex lens has a focal length of 30 cm and an index of refraction 1.5. Find the radius of the convex surface.

A biconvex lens ($\mu$ = 1.5) of focal length 0.2 m acts as a divergent lens of power 1 D when immersed in a liquid. Find the refractive index of the liquid.

Two thin converging lenses of focal lengths 20 cm and 40 cm are placed in contact. Find the effective power of the combination.

An object placed 20 cm in front of a convex lens has its image 40 cm behind the lens. Find the power of the lens.

A lens shown in figure is made of two different materials. A point object is placed on its axis. How many images will be formed.

A convex lens of focal length f produces a real image of size is $\frac{1}{n}$ times the size of the object. Find the position of the object.

A ray of light strikes a glass plate at an angle of $60°$. If the reflected and the refracted rays are perpendicular to each other, find the index of refraction of glass.