Questions
If the distance between a point source & absorber is halved then Intensity of radiant energy will be
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a
Doubled
b
Quadrupled
c
Halved
d
increased to 16 times
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Correct option is B
For a point source, intensity (I) at a distance r is given by I∝1r2 I' = 4ISimilar Questions
Which of the following curves represents spectral distribution of energy of black body radiation?
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