CONSIDER A MODIFIED LIGHT BULB IN WHICH THE DIAMETER OF THE FILAMENT WIRE IS 1/2

Question

CONSIDER A MODIFIED LIGHT BULB IN WHICH THE DIAMETER OF THE FILAMENT WIRE IS 1/2 HALF THE NORMAL SIZE , AND THE OPERATING VOLTAGE OF THE LIGHT BULB IS LOWERED AS WELL SO THAT THE
FILAMENT TEMPERATURE IS THE SAME AS THE CONVENTIONAL TUNGSTEN BULB (2500 C)
FOR Each OF THE FOLLOWING STATEMENTS COMPARING THE TWO LIGHT BULBS , INDICATE
TRUE OR FALSE.

A) THE SPECTRUM 0PF VISIBLE LIGHT EMITTED BY BOTH LIGHT BULBS IS THE SAME.

TRUE OR FALSE AND WHY.

B) THE MODIFIED LIGHT BULB WILL BE MORE EFFICIENT THAN THE CONVENTIONAL LIGHT BULB

TRUE OR FALSE AND WHY.

C) THE EMISSITY OF THE CONVENTIONAL LIGHT BULB IS HIGHER THAN THE MODIFIED LIGHT BULB.

TRUE OR FALSE. AND WHY.

E). THE MODIFIED LIGHT BULB WILL HAVE A LONGER LIFE COMPARED TO THE COMVENTIONAL
BULB.

TRUE OR FALSE AND WHY.

Explanation / Answer

true true false true

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