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What is the shape of the wavefront in ea...

What is the shape of the wavefront in each of the following cases?
a. Light diverging from a point source.
b. Light emerging out of a convex lens when a point source is placed at its focus.
c. The portion of the wavefront of light from a distanct star intercepted by the Earth.

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a. Spherical b. plane c. plane
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NEW JOYTHI PUBLICATION-WAVE OPTICS-SOLUTION TO EXERCISES FROM NCERT TEXT
  1. Monochromatic light of wavelength 589 nm is incident from air on a wat...

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  2. What is the shape of the wavefront in each of the following cases? a...

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  3. a. The refractive index is glass is 1.5. What is the speed of light in...

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  4. In a Young's double slit experiment, the slits are separated by 0.28 m...

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  5. In Young's double slit experiment using monochromatic light of wavelen...

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  6. A beam of light consisting of two wavelengths, 650 nm and 520 nm, is ...

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  7. Ina double slit experiment the angular width of a fringe is found to b...

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  8. What is the Breswster angle for air to glass transition? (Refractive i...

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  9. Light of wavelength 5000Å falls on a plane reflecting surface. What ar...

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  10. Estimate the distance for which ray optics is good approximation foran...

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  11. The 6563ÅHalpha line emitted by hydrogen in a star is found to be red ...

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  12. Explain how Corpuscular theory predicts the speed of light in a medium...

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  13. You have learnt in the text how Huygens' principle leads to the laws o...

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  14. Let us list some of the factors, which could possibly infuence the spe...

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  15. For sound waves, the Doppler formula for frequency shift differs sligh...

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  16. In double slit experiment using light of wavelength 600 nm, the angula...

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  17. Answer the following questions: a. In a single slit diffraction expe...

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  18. Two towers on top of two hills are 40 km apart. The line joining them ...

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  19. A parallel beam of light of wavelength 500 nm falls on a narrow slit a...

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  20. Suggest a possible explanation. As you have learnt in the text, the p...

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