a) According to Einstein\'s general theory of relativity, which of the following

Question

a) According to Einstein's general theory of relativity, which of the following statement is
true?
a) A clock on the ground of earth runs slower than a clock on a GPS satellite.
b) A clock on the ground of earth runs faster than a clock on a GPS satellite.
c) Clocks at di erent altitudes will keep time synchronously.
d) Einstein's general theory does not apply to the clock synchronization problem addressed
in a), b) and c).

b) The surface temperature of the Sun is about 5800 K and it emits approximately like a
blackbody with a peak intensity at wavelength 500 nm. A certain star emits with a peak
intensity at wavelength 145 nm. Assuming the star also radiates like a blackbody, what is
the surface temperature of the star?

Explanation / Answer

a)

Ans :- b) A clock on the ground of earth runs faster than a clock on a GPS satellite.

b)

Ans :- blackbody with a peak intensity at wavelength 500 nm. A certain star emits with a peak

Explanation :- The peak intensity of the radiation coming from a 5800 K blackbody is at about 500 nm

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