# Physics MCQs for NEST Part 11

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Question:

It is possible to observe total internal reflection when light travels from

1. Air to water

2. Air to glass

3. Water to glass

4. Glass to water

Question:

A concave lens has focal length. A real object placed at a distance fin front of the lens from the pole produces an image

Question:

The image formed by a plane mirror is

1. Real and same size as the object.

2. Virtual, same size as the object.

3. Real and magnified.

4. None of these.

Question:

36 The limit of resolution of the eye is one minute at a distance x from the eye. Two persons stand with a lateral separation of 3cms. To see the two persons just resolved by the naked eye. X should be about

Question:

In the displacement method of measuring the focal length of a convex lens, the length of the images in the two positions of the lens between the object and the screen is respectively. The length of the object is

Question:

The refracting angle of a prism is a and the refractive index of the material of the prism, the angle of minimum deviation is

Question:

A ray of light travels from vacuum into a medium of refractive index n. The angle of incidence is found to be twice the angle of refraction. The angle of incidence is

Question:

An object placed at distance ‘a’ from the focus of a convex lens forms its real image at a distance ‘b’ from the focus. The focal length of the mirror is

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