chapter light - reflection and refraction

magnifucation of a plane mirror is

• -1

• 0

• infinite

• +1

if the power of lens is -2D . the focal length is 

• +50

• -50

• 100

• -100

which of the mirror can produce real and inverted image

• plane mirror

• convex mirror

• concave mirror

• concave lens

a virtual erect and enlarged image is formed in case of convex lens where the object is placed

• infinity

• at 2F₁

• between F₁ and 2F₁

• between F₁ and optical centre O

A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is

• -20

• -30

• -60

• -40

Which of the following can make a parallel beam of light when light from a point source is incident on it?

• Concave mirror as well as convex lens

• Convex mirror as well as concave lens

• Two plane mirrors placed at 90° to each other

• Concave mirror as well as concave lens

The diagrams showing the correct path of the ray after passing through the

• II and III only

• I and II only

• I, II and III

• I, II and IV

Magnification produced by a rear view mirror fitted in vehicles

A full length image of a distant tall building can definitely be seen by using

• a concave mirror

• a convex mirror

• a plane mirror

• both concave as well as plane mirror

The laws of reflection hold good for

• a plane mirror only

• a convex mirror only

• a concave mirror only

• all mirror irrespective of their shape