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When a ray of light passes from air to d...

When a ray of light passes from air to denser medium, its speed is reduced by 30%. What is the refractive index of the medium

A

1.33

B

1.43

C

1.5

D

1.1

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  2. From the following ray diagram theta and theta1 are

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  9. Choose the CORRECT statement.

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  11. The principle axis of spherical mirror passes through

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  15. Given a point source of light, which of the following can produce a co...

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  16. A concave mirror produces a virtual image when the object is

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  17. For concave mirror, if the object is at the focusn f, the image is

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  18. A virtual image larger than the object canbe produced by

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