First slide

Diffraction of light-Wave Optics

Question

Fluorescent tubes give more light than a filament bulb of same power because

Easy

A

the tube contains gas at low temperature
B

ultraviolet light is converted into visible light by fluorescence
C

light is diffused through the walls of the tube
D

it produces more heat than bulb

Solution

The fluorescent material present in the tube converts UV rays into visible light.

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