reflection

Which of the following is a concave mirror?

• 
• 
• 
• 

Convex mirror is also called as

• converging mirror

• diverging mirror

• plane mirror

• silver mirror

The focal length of a plane mirror is ........

• infinite

• zero

• 1m

• 100m

The relation between focal length and radius of curvature is

• R = 2f

• 1/f = 2R

• f = R/2

• R = 2/f

Which mirror is shown in the figure?

• convex mirror

• concave mirror

• plane mirror

• silver mirror

According to laws of reflection,

• angle of incidence > angle of reflection

• angle of incidence < angle of reflection

• angle of incidence = angle of reflection

• both 1 and 2

The speed of light in vacuum is

Power of a lens is the ………. of its focal length.

• value

• reciprocal

• 2 times

• half

If the power of a lens is – 2 D, what is its focal length?

• +50 cm

• -50 cm

• -100 cm

• +100 cm

A ………. mirror is used as a head mirror by the doctors to concentrate light on the body parts to be examined.

• concave

• convex