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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

If the wavelength of light coming from a distant galaxy is found to be $0.5 %$ more than that coming from a source on earth. Then the velocity of the galaxy will be

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Answer:

Solution:

$\frac{d λ}{λ} = + 0.5 % = \frac{0.5}{100}$

$\frac{d λ}{λ} = \frac{a}{c}$ or $a = c \frac{d λ}{λ}$

$= \frac{3 \times 10^{8} \times 0.5}{100} = 1.5 \times 10^{6} m s^{- 1}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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