Question

What kind of mirror is suitable for street light bulb reflectors?
A. Concave
B. Convex
C. Plane
D. None

Answer 1

Hint: Reflectors are the objects made up of plastics that appear to glow or shine when it reaches on it. A reflector does not create light; it just reflects the existing lights they are generally used in car headlights and the street lights. Street light bulbs are mounted on poles constituted at a regular distance along Public Street or the highway.

Complete step by step solution:
Option A.
A concave mirror is also known as a converging mirror whose curved surface is inwards. The concave mirror shows different images depending upon the object and the mirror. The concave mirror is also called a converging mirror because it collects all the light falling on its surface to a point. The image formed by the concave mirror is real, inverted and the size of the image depends upon the size of the objects. A concave mirror is used to view big objects basically used in telescopes and shaving mirrors.

Option B.
The convex mirror is also called a diverging mirror whose curved surface is outwards. This mirror reflects lights outwards; hence it can’t be used as a focused light. This mirror forms an image which is virtual, upright and diminished. The magnification of this mirror is less than 1. A convex mirror has a wider view field than concave and plane mirror; it is used to view a larger object in a smaller size. Convex mirrors are used in sunglasses, vehicle mirrors, magnifying glass and in reflectors.

Option C.
A plane mirror has a flat reflecting surface whose reflection depends upon the angle of incidence of the light on the surface. The image formed by the plane mirror is always virtual, upright, and the size of the mirror is the same as the size of the object. A plane mirror is used in a microscope, mirror tiles, for signaling and periscopes.

Hence, comparing all the given options, it can be concluded option B is correct; a street light bulb uses the convex mirror as reflectors.

Note: Reflectors light bulbs are generally used in the heavy light application, in floodlights and in spotlights. Reflectors are used because they can spread light in a large area.