Question

the wavelength of light received from a Galaxy is 10% greater than that received from identical source on the earth the velocity of the Galaxy related to the earth is​

Answer 1

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● Answer -

v = 3×10^7 m/s

◆ Explanation -

# Given -

∆λ/λ = 10% = 0.1

# Solution -

Percentage increase in wavelength of light is related to velocity of galaxy as -

∆λ/λ = v / c

0.1 = v / 3×10^8

v = 3×10^8 × 0.1

v = 3×10^7 m/s

Therefore, velocity of galaxy w.r.t. earth is 3×10^7 m/s.

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Answer 2

Answer:

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