Question # 1

In compound microscope, image formed by the eyepiece is

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Real

Invented

Erect

Diminished

If the image is virtual then its distance from the lens is taken.

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Positive

Negative

Double

Half

Dispersive power of a prism depends upon the wavelength of the light used and is

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More for large wavelengths

Less for large wavelengths

More for small wavelengths

Less for small wavelengths

The working principal of a photograph enlarger is basically the same as that of a.

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Camera

Side projection

Microsopce

Telecopse

Which of the following is a transport optical element with flat polished surfaces that refract light.

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Monocole

Axicon

Prism

Lens

A part of electromagnetic spectrum that can be detected by the human aye

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Angle of incidence

Angle of refraction

Light

Angle of reflection

In a magnifying glass, the objective is placed at a distance

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Less than the focal

Between the focal length and twice the focal length

Greater than twice the focal length

At the focus of the lens

The object of a telescope is very large this is to have an image which is.

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More magnified

Of better resolution

More bright

More clear

On which property of lens, longitudinal chromatic aberration depend upon

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Resolving power

Dispersive power

Magnifying power

Radius of curvature

Colour of light is determined by its

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Amplitude

Velocity in air

Wavelength

State of polarization

The magnifying power of a convex lens of focal length 5 cm is

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3

5

6

20

Power of the lens is one dioptre, if its focal length is.

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1/6 metre

1/2 metre

1 metre

8 metre

Which is the thick circular structure in teh eye containing an aperture with variable diameter It controls the amount of light reaching the retina.

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Retina

Iris

Pupil

Cornea

In water drops rainbows are formed by

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Reflection

Refraction

Dispersion

All of these

The primary purpose of using a large aperture objective in a telescope is to produce

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Brighter image

Larger image

Wider field of view

Smaller image

The final image produced by a microscope is.

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Real and erect

Virtual and erect

Real and inverted

Virtual and inverted

A component of the spectrometer which consists of a fixed metallic tube with a coned lens at one end and an adjustable slit is called.

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Telescope

Collimator

Tumtable

Grating

Which mirror be used for obtaining a parallel beam of light from a small lamp.

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Plane mirror

Convex mirror

Concave mirror

All of these

Reciprocal of the focal length is called.

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Radios of curvature of the lens

Power of the lens

Aperture of the lens

Resolving power

A pencil dipped partially into water appears bent because of.

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Reflection of water surface

Diffraction of water surface

Refraction of water surface

Water is a fluid

Telecommunication by Optical fibers is done by

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Single mode step index fibre

Multimode step index fibre

Multimode graded index fibre

All of the above

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