Which colour indicates the hottest surface temperature of a star?

Red

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Green

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Blue

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Yellow

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Solution

The correct option is C
Blue

Coolest stars are red in color, warmer ones are orange. The hottest star shines with blue light.

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Similar questions

Among red, yellow and blue, blue coloured light has the shortest wavelength.

The elements of sets A , B and C are all colours as follows:

A = { Red , Orange , Yellow , Brown } ,

B = { Blue , Yellow , Green , Brown } ,

C = { Black , Brown , White , Grey }

Then, A U B U C is

0.2 M K O H

100

0.1 M H_{3} P O_{4}

\to

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