PPSC Physics Topic 7 MCQ Test With Answer

Prepare Modern Physics and all other important topics with PPSC Physics online test. Modern Physics is a term that is used to describe all the discoveries and observations that made physicists rethink their understanding of Physics in the 19th and 20th centuries. In this day and age, one can't study Physics without having a firm understanding of concepts of Modern Physics. That’s why seekers for PPSC Physics jobs need to understand the subject of Modern Physics. Examiners ask many questions from this topic in the PPSC Physics test.

To make the PPSC exam preparation easier for you, team IlmKiDunya.com has created the PPSC Physics online test portal. On this page, you can attempt the PPSC online test MCQs about Modern Physics. Many students complain that they don’t find information about the PPSC Physics exam preparation. We at IlmKiDunya.com bring PPSC online test to your fingertips so you can prepare quickly for the test.

MCQ's Test For PPSC Physics Topic 7 Modern Physics

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PPSC Physics Topic 7 Modern Physics

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Question # 1

The continuous X rays spectrum is due to an effect.

Question # 2

The SI unit of absorbed dose in.

Question # 3

When objects placed in a room are exposed to X- rays they appear

Question # 4

Which of the following is basic transistor configuration.

Question # 5

The usefulness of X rays is largely due to their

Question # 6

A spectroscope sorts out

Question # 7

The neutral atoms of all isotopes of the same element contain the same numbers of.

Question # 8

The input resistance of a JFET is of the order of.

Question # 9

In which of the following studies x-rays are not helpful.

Question # 10

At what speed the mass of a body will be doubled.

Question # 11

What is the overall gain, if three amplifiers each with a gain of 30 are cacaded.

Question # 12

The ionization energy for hydrogen atom is

Question # 13

Why FET amplifiers are called voltage controlled devices.

Question # 14

Which experiment is a demonstration that matter and energy can display properties of both waves and particles.

Question # 15

Lissajou's figures are used in a Cathode Ray Oscilloscope while measuring.

Question # 16

Which Isotopes is use din radioactive dating.

Question # 17

There are how many types of forces or interactions.

Question # 18

An oscillator is basically an amplifier with loop gain

Question # 19

The absorption of X-rays in a given material follows.

Question # 20

The half life of uranium -238 is

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 At high temperature a body generally emits redactions of.
A. Small wavelengths
B. Long wavelengths
C. Moderates wavelengths
D. Zero wavelengths
2 Radioactivity is the phenomenon associated with the.
A. Transition of radiowaves
B. production of alpha particles only
C. Decay of nucleus
D. Reception of radio waves
3 The unit generally used for measuring astronomical distances is.
A. Parsecs
B. Light year
C. Metre
D. Kilometer
4 The 'x' in X-rays means
A. Xenon
B. Explosion
C. x for unknown
D. X makes the spot
5 The angular speed of an electron in the nth orbit of Bohr's hydrogen atom is.
A. Directly proportional to n
B. Directly proportional to n2
C. Inversely proportional to n
D. Inversely proportional to n2
6 LED is a p-n junction that emits
A. Visible light
B. X- rays
C. Ultraviolet light
D. electromagnetic waves
7 Which of the following is deflected by an electric field.
A. Alpha particles
B. X rays
C. Gama rays
D. Neutrons
8 Transistors with various combinations are widely used as switches in.
A. electric generators
B. Rectificers
C. Amplifiers
D. Computers
9 Transistor are made from
A. Plastics
B. Metals
C. Insulators
D. Doped semiconductors
10 When an electron and a positron are annihilated, then number of protons produced is.
A. 1
B. 2
C. 3
D. 4

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