Question

In which of the following places beams of light are used?

• A. Cinema Hall
• B. Laser beams in television
• C. Lighthouse
• D. All of the above

Answer 1

The correct option is D

All of the above

Beams of light can be spotted in the cinema hall from the projection room to the screen. These days, small laser torches are used as pointers which produce very sharp light beams. You might have also seen beams of searchlights from the lighthouse or an airport.