The brightness of a star depends on its
A. size and temperature
B. size and distance from the Earth
C. size, temperature and mass
D. size, temperature and distance from the Earth
Answer: Option A
A. size and temperature
B. size and distance from the Earth
C. size, temperature and mass
D. size, temperature and distance from the Earth
Answer: Option A
A. Zeroth Law of Thermodynamics
B. First Law of Thermodynamics
C. Second Law of Thermodynamics
D. Third Law of Thermodynamics
A black body can absorb radiations of
A. lower wavelengths only
B. intermediate wavelengths only
C. higher wavelengths only
D. all wavelengths
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