SATHEE: Optics Question 266

Optics Question 266

Question: Light from the constellation Virgo is observed to increase in wavelength by 0.4%. With respect to Earth the constellation is

[MP PET 2003]

Options:

A) Moving away with velocity 1.2 x 106 m/s

B) Coming closer with velocity 1.2 x 106 m/s

C) Moving away with velocity 4 x 106 m/s

D) Coming closer with velocity 4 x 106 m/s

Show Answer

Answer:

Correct Answer: A

Solution:

Using $\frac{Δ λ}{λ} = \frac{v}{c} \Rightarrow v = \frac{Δ λ}{λ} c$

$\Rightarrow v = 0.004 \times 3 \times 10^{8} = 1.2 \times 10^{6}$ m/sec

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Optics Question 266

Question: Light from the constellation Virgo is observed to increase in wavelength by 0.4%. With respect to Earth the constellation is

Options:

Answer:

Solution:

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