1.

What will be the ratio of temperatures of sun and moon if the wavelengths of their maximum emission radiations rates are 140 Å and 4200 Å respectively [J & K CET 2004]

A. 1 : 30
B. 30 : 1
C. 42 : 14
D. 14 : 42
Answer» C. 42 : 14


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