Last Updated On 16-03-2023 - By Jeesha Sara
The 
line emitted by hydrogen atom in a star is found to be red shifted by 
. The speed with which the star is receding from the earth is
a)
b)
c)
d)
The line emitted by hydrogen atom in a star is found to be red shifted by . The speed with which the star is receding from the earth is
a)
b)
c)
d)
Question ID - 150102 :-
The line emitted by hydrogen atom in a star is found to be red shifted by . The speed with which the star is receding from the earth is
a)
b)
c)
d)
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A thin film of soap solution |
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lies on the top of a glass plate 
. When visible light is incident almost normal to the plate, two adjacent reflection maxima are observed at two wavelengths 420 and 630 
. The minimum thickness of the soap solution are
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