Question

LEDs are better than conventional incandescent power lamps because:

• A. LEDs have higher efficiency.
• B. LEDs look beautiful.
• C. LEDs are cheap.
• D. all of the above.

Answer 1

The correct option is D all of the above.

LEDs are better than conventional incandescent power lamps because:-

i)LEDs use less power (watts) per unit of light generated (lumens)

ii) LEDs have higher effiiciency.

iii)LEDs have longer lifetime.

iv)LEDs are cheap.

v)LEDs look beautiful.

Hence option D is correct.