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On a hot summer night, the refractive in...

On a hot summer night, the refractive index of air is smallest near the ground and increases with height from the ground. When a light beam is directed horizontally, the Huygens` principal leads us to conclude that as it travels, the light beam:

A

bends downwards

B

bends upwards

C

becomes narrower

D

goes horizontally without any deflection

Text Solution

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The correct Answer is:
B
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MOTION-WAVE OPTICS -EXERCISE - 4 (Level - I) Previous Year | JEE Main
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  2. If I0 is the intensity of the principal maximum in the single slit dif...

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  3. A Young's double slit experiment uses a monochromatic source. The shap...

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  4. In a Young's double slit experiment the intensity at a point where tha...

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  5. A micture of light, consisting of wavelength 590nm and an unknown wave...

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  6. The initial shape of the wave front of the beam is

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  7. Statement-1: When light reflects from the air-glass plate interface, t...

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  8. In a Young's double slit experiment, the two slits act as coherent sou...

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  9. At two point P and Q on screen in Young's double slit experiment, wave...

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  10. In Young's double slit experiment, one of the slit is wider than other...

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  11. A beam of unpolarised light of intensity I0 is passed through a polaro...

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  12. Two coherent point sources S1 and S2 are separated by a small distance...

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  13. As polaroid examines two adjacent plane polarised beam A and B whose p...

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  14. The diameter of a plano convex lens is 6 cm and thickness at the centr...

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  15. Assuming human pupil to have a radius of 0.25 cm and a comfortable vie...

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  16. The box of a pin hole camera, of length L, has a hole of radius a . It...

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  17. On a hot summer night, the refractive index of air is smallest near th...

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  18. In a Young's double slit experiment, slits are separated by 0.5 mm and...

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  19. Unpolarized light of intensity I passes through an ideal polarizer A. ...

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  20. The angular width of the central maximum in a single slit diffraction ...

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