Question

Convex lens is not used in :

• A. Simple microscope
• B. Spectacles
• C. Telescope
• D. Flood lights

Answer 1

The correct option is D Flood lights

Convex lens always converges the parallel rays but in flood lights, we want to diverge the incident rays so as to light up more area. Thus we use a diverging lens i.e. a concave lens. Thus a convex lens is not used in flood lights.