NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1051 - 1056 of 1484

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Question number: 1051

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Question

If a ray of light is incident normally in a glass slab, then angle of refraction is:

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1052

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Question

An object is placed at the focus of a convex lens. The image will formed:

Choices

Choice (4) Response

a.

No image is formed

b.

Between focal point and centre of lens

c.

At radius of curvature of the lens

d.

At focal point other side of lens

Question number: 1053

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Question

If a ray parallel to principle axis is incident on a concave mirror, then after reflection it will:

Choices

Choice (4) Response

a.

retrace its path

b.

pass through the centre of curvature.

c.

pass through focus

d.

pass through the pole

Question number: 1054

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Question

If height of an object is and it placed in front of a convex lens of magnification , then the height of the image is;

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1055

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Question

A concave lens has a focal length of . If an object is placed from optical centre of the lens, then which of following shows characteristics of the image?

Choices

Choice (4) Response

a.

Inverted, virtual and diminished

b.

Inverted, real and diminished

c.

Erected, real and enlarged

d.

Erected, real and diminished

Question number: 1056

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Question

A concave lens is made by cutting a portion of a hollow glass sphere of radius . If an object is placed far from the centre of the lens, then what is the distance between image and the centre of the lens?

Choices

Choice (4) Response

a.

20

b.

c.

d.

9

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