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Rays diverging from a point source from ...

Rays diverging from a point source from a ………… wavefront.

A

Cylindrical

B

Spherical

C

Plane

D

Cubical

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The correct Answer is:
B
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Ray diverging from a point source from a wave front that is

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For light diverging from a point source

Choose the correct option: (i) A surface on which the wave disturbance in same phase at all points is called a wavefront. (ii) The direction of a wave at a point is perpendicular to the wavefront through that point. (iii) The wavefronts of a wave originating from a point source is spherical. The wavefronts for a wave going along a fixed direction are planes perpendicular to that direction.

What is the shape of the wavefront in each of the following cases ? (a) light diverging from 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 distant star intercepted by earth.

TARGET PUBLICATION-WAVE THEORY OF LIGHT -COMPETITIVE THINKING
  1. Wavefront is the locus of all points, where the particles of the mediu...

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  2. When a ray of light is incident normally on a surface, then

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  3. Rays diverging from a point source from a ………… wavefront.

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  4. For the same angle of incidence the angles fo refreaction in media ...

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  5. A ray of light is incident on the surface of seperation of a medium at...

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  6. A light is travelling from air a medium the velocity of light in a me...

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  7. A ray of light travelling through rarer medium is incident at very sma...

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  8. The refractive indices of water and galss w.r.t. air are 1.3 and 1.5 r...

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  9. A ray of light is icident on a glass plate of refractive index 1.5. Th...

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  10. A wave of light having frequency 4 xx 10^(14)Hz. And speed of light 3...

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  11. The change in wavelenght of light of frequency 4 xx 10 ^(14)Hz. When i...

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  12. The wavelenth of light is 5000 Å . Find the wave number.

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  13. If the wavelength of light is 4000 Å, then the number of waves in 1 mm...

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  14. For a radiation of 8 GHz passing though air. The number of waves passi...

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  15. A light wave in air enters a medium of refractive index (4)/(3). If t...

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  16. A light passes through glass slabv of refractive index 1.5 and thickne...

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  17. Light passess through glass of refractive index 1.5 . What is the tim...

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  18. The ratio of velocities of light in glass that in whater is ( refract...

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  19. Time taken by the light ot travel through 5 cm orf glass is same is ...

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  20. A ray of light is incident normally on a glass slab of thickness 5 cm ...

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