Question # 1

A bi prism consists of.

Choose an answer

Two parallel glass plates

Two acute angled prisms

Two obtuse angled prisms

Two right angled prisms

What is the magnifying power of a convex lens of focal length 5 cm.

Choose an answer

3

5

6

20

What is zoom lens

Choose an answer

It is a lens having fixed focal length

It is a lens having variable focal length

It is a lens used in radii to telescope

All of the above

The blooming of the image due to dispersion in lenses is called.

Choose an answer

spherical aberration

Chromatic aberration

Astigmation

Curvature of image field

A negative magnification always means the the image is.

Choose an answer

Erect

Real

Virtual

Inverted

When of the following colours scatters minimum.

Choose an answer

Blue

Violet

Yellow

Red

A fixed point inside the lens through which a ray of light does not change its path is called.

Choose an answer

Pole

Focus

Centre of curvature

Opticla centre

When a ray of light enters a glass slab from air

Choose an answer

Its frequency increases

Its wavelength increases

Neither frequency nor wavelength change

Its wavelength decreases

Clouds are white because they efficiently scatter sunlight of all

Choose an answer

Colours

Wavelengths

Frequencies

Phases

The relation between angle of incidence and angle of refraction is known as.

Choose an answer

Snell's law

Refractive index

Index of refraction

All of the above

Reciprocal of the focal length is called.

Choose an answer

Radios of curvature of the lens

Power of the lens

Aperture of the lens

Resolving power

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

Choose an answer

Camera

Side projection

Microsopce

Telecopse

The phenomenon of regular refraction of light illustrates taht.

Choose an answer

Light is reflected in one direction only

Light is reflected through a range of different angles

Light is refracted in one direction only

Light is refracted through a range of different angles.

A double convex an bubble in water will behave as.

Choose an answer

Plane slab

Concave mirror

Convex lens

Concave lens

Which of the following phenomenon is caused by the different speeds of light in differed optical media.

Choose an answer

Reflection

Refraction

Diffraction

Total internal reflection

The relation between refractive index an critical angle is.

Choose an answer

sin C =1/n

sin n = 1/C

sin c = 1

n = sin C

To reduce spherical aberration in optical instruments which of the following should be used.

Choose an answer

Plano convex lenses

Concave lenses

Spherical mirrors

Plane mirrors

The resolving power of an instrument increases as the wavelength of light used decreases, the magnifying power will

Choose an answer

Remain the same

Increases

Decreases

Have no relation between the two

To final image produced by a compound microscope is.

Choose an answer

Real and inverted

Real and erect

Virtual and erect

Virtual and inverted

Chromatic aberration can be removed by using.

Choose an answer

Convex lens

Two convex lenses

Concave lens

Combination of a convex lens and a concave lens

In compound microscope image formed by the eyepiece is

Choose an answer

Real

Inverted

erect

diminished

More Classes

Other Links

PPSC Physics Chapter 4 Geometrical Optics MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer