Ray Optics (BITSAT Physics): Questions 7 - 12 of 17

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Question number: 7

» Ray Optics » The Eye

MCQ▾

Question

If in Ramsdens’ eye piece, the field lenses have focal length respectively and separated by a distance then –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 8

» Ray Optics » Eyepiece Lenses

MCQ▾

Question

Astigmatism can be corrected by using –

Choices

Choice (4) Response

a.

Plane convex lenses

b.

Bifocal lenses

c.

Cylindrical lenses

d.

Concave spherical lenses

Question number: 9

» Ray Optics » Magnification

MCQ▾

Question

In order to obtain a real image of magnification 2 using a converging lens of focal length 20 cm, where should be an object be placed?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 10

» Ray Optics » Deviation and Dispersion of Light by a Prism

MCQ▾

Question

A ray of light passing through the optic centre of a thick lens is –

Choices

Choice (4) Response

a.

Displaced and deviated

b.

Not displaced and but deviated

c.

Displaced but not deviated

d.

Question does not provide sufficient data or is vague

Question number: 11

» Ray Optics » Mirror Formula

MCQ▾

Question

An object is placed at a distance equal of focal length of convex mirror. If the focal length of the mirror be , then the distance of the image from the pole of the mirror is –

Choices

Choice (4) Response

a.

More than

b.

Equal to

c.

Less than

d.

Infinity

Question number: 12

» Ray Optics » Power of a Lens

MCQ▾

Question

An optician prescribes spectacles to a patient with a combination of a convex lens of focal length and concave lens . The power of spectacles is –

Choices

Choice (4) Response

a.

b.

c.

d.

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