Mirrors

The point of collection of the Parallel rays after being reflected from the mirror is focus of mirror

• True

• False

The focal length of mirror is the distance between the pole of the mirror and its focus

• True

• False

Light rays produced by a distant (far) object is focus

• True

• False

The scientist who used the way of concentrating the Sun rays to destroy the Roman fleet in 212 B.C

• Mendeleev

• Newton

• Archimedes

• Rutherford

The image that can be received on the screen is ........ image

The image formed always by the convex mirror, or sometimes by the concave mirror and can l be received on the screen is .............. image

The spherical mirrors are used in .........

• medical glasses

• marine lighthouses

• televisions

• computer

A body of length 4 cm is placed at a distance of 8 cm from a convex mirror, so the length of the formed image becomes ........ cm

• 16

• 8

• 4

• 2

W1len the object is placed at the center of curvature of a concave mirror the formed image is real, inverted and .......

• diminished

• equal

• magnified

• very tiny

When an object is placed to face a convex mi11or, the formed image ........

• can be received on a screen.

• real

• inverted

• lies behind the mirror