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

Which of the following is deflected by an electric field.

Question # 2

Two electrons approach each other their relative velocity will be.

Question # 3

What do we study by crystallography.

Question # 4

Which Isotopes is use din radioactive dating.

Question # 5

The unit Planck's constant is equivalent to that of.

Question # 6

When of the following radiations are not emitted by electron transitions in atoms.

Question # 7

The most suitable material for moderator in a nuclear reactor is.

Question # 8

When a helium atom loses an electron it becomes.

Question # 9

The energy delivered to the tissue per unit mass is called the absorbed dose of.

Question # 10

Which one of the following quantities is conserved in a nuclear reactor.

Question # 11

The radius of second orbit of hydrogen atom is

Question # 12

The total energy of the hydrogen atom is

Question # 13

The emission of photons by a metal when electrons are incident is called.

Question # 14

Specially designed solid state detector can be used to detect.

Question # 15

Half life and mean lifetime of a radioactive element are.

Question # 16

A factory buy 100 g of a radioactive chemical with a half life of 5 years which decays to a stable compound How much of the chemical will still be radioactive 10 years time.

Question # 17

On which factor cut off wavelength of X-rays coming from a Coolidge tube depends upon.

Question # 18

Radioactive substances do not emit

Question # 19

The process of pair production will take place if the energy of photon is greater than.

Question # 20

How much large is the proton mass than the electron mass.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Base current of a transistor is 1 mA and collector current is 99 mA What is emitter current.
A. 1 mA
B. 100 mA
C. 98 mA
D. 110 mA
2 Why FET amplifiers are called voltage controlled devices.
A. Input is a current signal
B. Output is a current signal
C. Input is a voltage signal
D. Output is a voltage signal
3 The force that bonds protons and neutrons together int he nucleus despite the electrical repulsion of the protons is called.
A. Molecular force
B. Nuclear force
C. Atomic force
D. Gravitational force
4 Negative feedback
A. Increases stability
B. Decreases stability
C. Produces oscillatory
D. Cannot occur
5 NOR gate is a combination of.
A. OR gate and NOT gate
B. OR gate and AND gate
C. OR gate and OR gate
D. NOT gate and AND gate
6 The emission of electrons from a metal surface when exposed to light of suitable frequency is called.
A. Pair production
B. Compton effect
C. Photo electric effect
D. Zeeman effect
7 Lines of Balmer series are emitted by hydrogen atom when the electron jumps from
A. The first orbit to any other orbit
B. Higher orbits to second orbit
C. Higher orbits to first orbit
D. The third orbit to higher orbit
8 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
9 Neutrino9 is a particle with
A. Charge less property and has no spin
B. Charge less property and has spin
C. Charge less like electron and has spin
D. The same property as neutron
10 The most readily fissionable isotope of uranium has atomic mass of
A. 234
B. 235
C. 236
D. 238

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