PPSC Physics Topic 4 MCQ Test With Answer

An important topic in the PPSC Physics Test is Geometrical Optics. In the field of Geometrical Optics, physicists study the propagation and behavior of light with the help of abstract mathematical rays. The process of abstraction of the concept of light makes it easier for the physicists to study the light when it goes from one place to the other or strikes with some material. Our understanding of the universe is nothing without the visible light that allows us to see things with our naked eyes. The importance of Geometrical Optics is therefore fundamental in the study of Physics as it enables us to understand how we see and what improvements we can make to see things better.

We at IlmKiDunya.com enable you to attempt PPSC Physics online test. With Online PPSC Physics exam preparation, you can have an idea of what questions get asked in the paper. Start the test now and test your understanding of Geometrical Optics.

MCQ's Test For PPSC Physics Topic 4 Geometrical Optics

Try The MCQ's Test For PPSC Physics Topic 4 Geometrical Optics

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PPSC Physics Topic 4 Geometrical Optics

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Question # 1

Reciprocal of the focal length is called.

Question # 2

Plossi or symmetrical eye piece consists of

Question # 3

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

Question # 4

The band of colours is called.

Question # 5

When a ray of light travelling in a denser medium enters into a rarer medium.

Question # 6

In case of a convex lens when object is placed away from 2F, image is formed.

Question # 7

To obtain is parallel beam from the headlight of a car it must be fitted with.

Question # 8

The line passing symmetrically though the optical center of the lens is.

Question # 9

The near point of a person is 50 cm and his far point is 200 cm The power of the lenses which his spectacles should have to see clearly distant objects will be.

Question # 10

The refractive index of benzenes is 1.5 What is the critical angle of benzene.

Question # 11

The power of lens in dioptres is

Question # 12

use of outer layer in optical fires called cladding is mainly to.

Question # 13

What is the focal length of a normal eye lens.

Question # 14

Any transparent medium bounded by one or two spherical surfaces is called

Question # 15

What would be the colour of sky n the absence of atmosphere.

Question # 16

Which of the following quantities is not changed during refraction of light.

Question # 17

Which Muslim Scientist gave the first clear description and correct analysis of pinhole camera.

Question # 18

The power of convex lens of focal length 50 cm will be

Question # 19

Larger the diameter of the objective of a telescope.

Question # 20

Which eye defect can be rectified by using diverging lens.

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PPSC Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 In case of a convex lens when object is placed at 2F image is formed.
A. At
B. 2F
C. away from 2F
D. Between F at and 2 F
2 The dioptre power of concave lens of 10 cm focal length is.
A. 0.1 dioptre
B. 1.0 diopter
C. 10 dioptre
D. -10 dioptre
3 Which phenomenon is responsible formation of shadows.
A. Interference of light
B. Diffraction of light
C. Polarization of light
D. Propagation of light
4 A fixed point inside the lens through which a ray of light does not change its path is called.
A. Pole
B. Focus
C. Centre of curvature
D. Opticla centre
5 Light rays after passing through is concave lens.
A. Bend away from principal axis
B. Bend towards principal axis
C. Remain undeviated
D. Travel parallel to the principal axis
6 When a light ray enters from air into water then its wavelength.
A. Increases
B. Decreases
C. Become infinity
D. Remains constant
7 Rainbows and mirage are formed by
A. Reflection only
B. Refraction only
C. dispersion only
D. A combination of refraction, total internal refraction and dispersion
8 The branch of medicine which deals with the anatomy physiology and diseases of the eye
A. Ophthalmology
B. Radiology
C. Cardiology
D. Andrology
9 Dioptre is the term used for describing the
A. Intensity of light
B. Density of air
C. Power of light
D. Refractive index
10 Dispersive power of a prism depends upon the wavelength of the light used and is
A. More for large wavelengths
B. Less for large wavelengths
C. More for small wavelengths
D. Less for small wavelengths

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