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One cannot see through fog, because

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Important Questions on Wave Optics

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Physics Crash Course KCET (UG)>Chapter 31 - Wave Optics>Exercise 1>Q 135
Sir C.V. Raman was awarded nobel prize for his work concerned with which of the following phenomenon of radiation?
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Physics Crash Course KCET (UG)>Chapter 31 - Wave Optics>Exercise 1>Q 137
Dichroism is the property where
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IMPORTANT
Physics Crash Course KCET (UG)>Chapter 31 - Wave Optics>Exercise 1>Q 138

For navigation purpose, in polar regions

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IMPORTANT
Physics Crash Course KCET (UG)>Chapter 31 - Wave Optics>Exercise 1>Q 139
Due to Doppler's effect the shift in wavelength observed is 0.1 Å for a star producing wavelength 6000 Å. Velocity of recession of the star will be
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KCET (UG)
IMPORTANT
Physics Crash Course KCET (UG)>Chapter 31 - Wave Optics>Exercise 1>Q 140
If a star emitting light of wavelength 5000 A∘ is moving towards earth with a velocity of 1.5×106 m s-1, then the shift in the wavelength due to Doppler's effect will be,
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KCET (UG)
IMPORTANT
Physics Crash Course KCET (UG)>Chapter 31 - Wave Optics>Exercise 1>Q 141
In the context of Doppler effect in light, the term red shift signifies
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IMPORTANT
Physics Crash Course KCET (UG)>Chapter 31 - Wave Optics>Exercise 1>Q 142
Astronomers have observed that light coming from far away stars do not show the same spectrum as observed on Earth. Each wavelength is shifted slightly towards the red end of the spectrum. It is observed that the 1st line of Lyman series shows 121 nm on Earth, but from the star it shows 122 nm. The speed of the star with respect to Earth is close to
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KCET (UG)
IMPORTANT
Physics Crash Course KCET (UG)>Chapter 31 - Wave Optics>Exercise 1>Q 143
A galaxy moves with respect to the earth so that Sodium line of 589.0 nm is observed at 589.6 nm. The speed of the galaxy is