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MHT CET Physics question

PhysicsWavesMHT CET

The velocity of a moving galaxy is and the apparent change in wavelength of a spectral line emitted from the galaxy is observed as . Then, the actual wavelength of the spectral line is

Answer: (B)

Solution

gives \dfrac{0.5×10^{-9}×3×10^{8}}{3×10^{5}}10^{-7}$\

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Question ID VK-077269