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The complete circle of rainbow can be se...

The complete circle of rainbow can be seen when

A

the sun and observer are co-axial.

B

the observer and clouds are co-axial.

C

the sn, the observer and clouds are co-axial.

D

the un and clouds are co-axial.

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TARGET PUBLICATION-OPTICS-EXERCISE
  1. Mirage' is a phenomenon due to

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  2. The rainbow is formed due to

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  3. The complete circle of rainbow can be seen when

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  4. To observe any rainbow the altitude of sun or the angle made by the su...

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  5. The primary rainbow is due to internal reflection inside droplet and ...

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  6. Angular width of primary rainbow is

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  7. The average angle of inclination of the primary rainbow with the axis ...

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  8. In case of secondary rainbow, colour is at the top.

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  9. The secondary rainbow is due to internal reflection inside droplet.

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  10. The straight line joining the sun and the observer along which centre ...

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  11. Pick the correct statement from the following.

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  12. Rays of different colours fail to converge to a point after passing th...

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  13. What causes chromatic aberration?

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  14. Achromatic combination can not be achieved by using

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  15. An achromatic combination of lenss produce.

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  16. In presence of aberration, circular image is formed of a point.

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  17. Spherical aberration of a convex and a concave lens respectively is

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  18. An optical instrument , in general, extends our range of vision by

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  19. The least distance of distinc vision for a young adult with normal vis...

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  20. A norml eye is unable to see objects at a distance less than distance ...

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