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The temperature of a black body is gradu...

The temperature of a black body is gradually increased. The colour of the body will change from

A

White - green - red

B

Red - yellow - blue

C

Red - violet - yellow

D

Yellow - green - red

Text Solution

Verified by Experts

The correct Answer is:
B
According to Wien's displacement law,
`lamda_(m)T` = constant
`therefore` As temperature in increased, `lamda` is decreased in the visible spectrum, VIBGYOR, `lamda_(R)gtlamda_(Y)gtlamda_(B)`
`therefore` The colour will change from red to yellow to blue.
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