23.8.21 VIII SCI L-3 Q-2

The spherical mirror with a reflecting surface curved inward is called

• convex mirror

• concave mirror

• curved mirror

• None of the above

The spherical mirror used as a rear view

mirror in the vehicle is

• concave mirror

• convex mirror

• plane mirror

• None of the above

Bouncing back of the light rays as they fall

on the smooth, shiny and polished surface is

called ________

• dispersion

• refraction

• reflection

• periscope

The______________ is the light ray in a

medium falling on the shiny surface of a reflecting

body

• refracting ray

• reflecting ray

• normal ray

• incident ray

An imaginary line perpendicular to

the reflecting surface, at the point of incidence of

the light ray, is called the______________ .

• incident ray

• refractive ray

• normal ray

• reflactive ray

________ metal is the best reflector of light.

• iron

• tin

• Silver

• gold

____________ is an instrument used for viewing bodies

or ships, which are over and around another

body or a submarine.

• Kaleidoscope

• Periscope

• dispersion of light

• both a and b

_____ is a device which functions on the

principle of multiple reflection of light, to

produce numerous patterns of images.

• periscope

• Kaleidoscope

• Refraction of Light

• both a and b

Refraction of light rays, as they travel

from one medium to another medium, obeys

two laws, which are known as ______________ .

• Dispersion

• Snell’s laws of refraction

• Refractive Index

• both a and b

If the image and object distance is same, then the object is placed at __

• infinity

• at F

• between f and P

• at C