Q13 of 36 Page 379

Redraw the following diagrams given below in your answer book and show the direction of the light ray after refraction from the lens.



The lens is concave lens, hence it diverges the ray of the light coming from infinity after refraction;


(b)


The above lens is the convex lens; hence the ray of light passing through focus after refraction will become parallel to the principal axis after refraction.


More from this chapter

All 36 →
11

The refractive indices of water and glass are and respectively. Write the relation and find the value of refractive index of water with respect to glass and glass with respect to water.

 12

A concave mirror and a convex lens are held separately in water. What changes, if any, do you expect in the focal length of either?

 14

A convergent lens has a focal length of 15 cm. At what distance should an object from the optical centre of the lens be placed so that its real image is formed at 30 cm on the other side of the lens?

 15

An object is placed between infinity and the pole of a convex mirror. Draw a ray diagram and also state the position, the relative size and the nature of the image formed.