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

Try The 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

When a posirtron is emitted it causes.

Question # 2

The Rutherford atom according to classical theory is

Question # 3

x-rays cannot produce

Question # 4

The value of principal quantum number for an ionized atom is.

Question # 5

Which of the following is not a mode of radioactive decay

Question # 6

The phenomenon of Compton's effect process that right has

Question # 7

A transistor can be used as

Question # 8

The resistance between(+) and (-) inputs of an amplifier is.

Question # 9

Ionization of a hydrogen atom originally in its ground state takes a minimum out of energy equal to.

Question # 10

The rest mass of a particle is independent of the

Question # 11

The half life of a radioactive substance is 6 years What is the time taken by 12 g of this substance to decay completely.

Question # 12

The energy of neutrons obtained during a fission reaction is.

Question # 13

A newly prepared radioactive nuclide has a decay constant Lamda of 10-6 s-1 What is the approximate half life of the nuclide.

Question # 14

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

Question # 15

The half life of a given radioactive isotope is 10 years The original mass of the isotope is 12 g What mass of this isotope remains un decayed after 20 years.

Question # 16

X-rays are absorbed maximum by

Question # 17

The half life of radium -226 is

Question # 18

Photocells are used for

Question # 19

Which of the following is not an electromagnetic wave.

Question # 20

The chemical behavior of an atom is determined by

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Isotopes are the atoms of the same elements which contain equal number of.
A. Nucleus
B. Neutrons
C. Protons
D. Electrons
2 Transistor are made from
A. Plastics
B. Metals
C. Insulators
D. Doped semiconductors
3 Which of the following radiations can penetrate 20 cm thick steel.
A. Alpha particles
B. Beta particles
C. Gama particles
D. Neutrons
4 The band width of an audio amplifier is.
A. 10 Hz to 10 kHz
B. 20 Hz to 54 Hz
C. 20 Hz to 20 kHz
D. 20 Hz to 60 kHz
5 The energy delivered to the tissue per unit mass is called the absorbed dose of.
A. X rays
B. gama rays
C. Radiation
D. energy
6 Which of the following radiations will burn human skin
A. Infrared
B. Ultraviolet
C. X rays
D. Alpha particles
7 The molecular weight of D2O is
A. 16
B. 18
C. 20
D. 24
8 When Be is bombarded by alpha particles, then we obtain
A. electron
B. Proton
C. Positron
D. Neutron
9 The usefulness of X rays is largely due to their
A. Mass
B. Density
C. Volume
D. Penetrating power
10 In n-p-n transistor the current flows in the direction from
A. Emitter to base
B. emitter to collector
C. Base to emitter
D. Base to collector

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