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

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PPSC Physics Topic 4 Geometrical Optics

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Question # 1

In a compound microscope magnification will be large if focal length of eyepiece is

Question # 2

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

Question # 3

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

Question # 4

Which parameter is an indication of colour of a star.

Question # 5

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

Question # 6

Which statement about the image formed by a convex lens is correct.

Question # 7

A real object paled inside the focus of a convex lens gives

Question # 8

When we decrease the diameter of the objective lens of a telescope the resolution of telescope

Question # 9

Which parameter determines the brightness of a light source sensed by an eye.

Question # 10

The characteristic of an image formed by a plane mirror is.

Question # 11

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

Question # 12

Refraction contributes to the formation of.

Question # 13

An image formed on the film of camera is

Question # 14

linear magnification is the ratio between the

Question # 15

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

Question # 16

Which of the following is the cause of failure of a lens to form a sharp and district image of a white object.

Question # 17

Why danger signals are made red.

Question # 18

Eye colour is the colour of

Question # 19

Maximum detail of an object can be seen by a microscope when the object is illuminated by light of.

Question # 20

If a ray of light in glass in incident on an air surface at an angle greater than the critical angle, the ray will

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PPSC Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Larger the diameter of the objective of a telescope.
A. Greater is its resolving power
B. Lesser is its resolving power
C. Lesser is its magnifying power
D. greater is its magnifying power
2 A double convex air bubble in water will behave as.
A. Plane slab
B. Concave mirror
C. Convex lens
D. Concave lens
3 the depth of a pond is 4 m What is the apparent depth of the pond if the water level is 3.5 m high. The refractive index of water is 1.33
A. 1.9 m
B. 2.3 m
C. 3.13 m
D. 4.5 m
4 Plossi or symmetrical eye piece consists of
A. Two plano convex lenses with same focal length
B. Two sets of doublets
C. An achromatic double
D. A spherical doublet
5 To final image produced by a compound microscope is.
A. Real and inverted
B. Real and erect
C. Virtual and erect
D. Virtual and inverted
6 In optics, which subfield studies the measurement of electromagnetic radiation including visible light.
A. Radiometry
B. Photometry
C. Telemetry
D. Chronometry
7 A real object paled inside the focus of a convex lens gives
A. Real image but diminshed
B. Real image but enlarged
C. virtual image but diminished
D. Virtual image but enlarged
8 Loss of power is optical fibre result into
A. Poor receipt ion of signals
B. Delay in time for reception of signals
C. accurate information at the receivers
D. All of the above
9 What is the focal length of a normal eye lens.
A. 1 mm
B. 2 cm
C. 25 cm
D. 1 m
10 The focal length of a thin converging lens is 10 cm What is the maximum distance from the lens that the object can be placed so that the lens acts as a magnifying glass.
A. 5 cm
B. 10 cm
C. 15 cm
D. 20 cm

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