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

Which of the following phenomenon is explained by the tunnel efffect.

Question # 2

Alpha particles are used for the treatment of skin of a patient due to.

Question # 3

When light of particular frequency is allowed to fall upon a metal surface electrons are emitted from a these emitted electrons are called.

Question # 4

The average energy released per fission of U is about

Question # 5

The mass of proton is equal to.

Question # 6

In radiotherapy X-rays are used to.

Question # 7

The advantage of electron tube over semiconductor is.

Question # 8

Cobalt -60 is a radioactive element with half life of 5.25 years. What fraction of the original sample will be left after 26 years.

Question # 9

The wavelength of X-rays is of the ofder of.

Question # 10

How many terminals does a BJT have.

Question # 11

Which of the following circuits is used as local oscillator in radio receivers.

Question # 12

At room temperature the potential difference between the two sides of depletion region for silicon is of the order of.

Question # 13

X-rays used for

Question # 14

The result of the alpha particle scattering experiment gave evidence for which of the following.

Question # 15

The half life of a radioactive element depends upon.

Question # 16

The binding energy per nucleon for uranium is about.

Question # 17

Which of the following has greatest binding energy per nucleon.

Question # 18

Which temperature is required for the fusion of two nuclides.

Question # 19

In a Geiger Marsden experiment why do the great majority of the Alpha particles pass straight through the metal foil.

Question # 20

The Inner electrons in heavy atoms can be disturbed and dislodged by.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 What is the effect of electric and magnetic fields on X-rays
A. X-rays are deflected
B. X-rays are not deflected
C. X-rays are sometimes deflected and sometimes not
D. Nothing can be said
2 When Be is bombarded by alpha particles, then we obtain
A. electron
B. Proton
C. Positron
D. Neutron
3 In heavy atims the electrons are assumed to be arranged in.
A. Elliptical shells
B. Inner shells
C. Concentric shells
D. Outer shells
4 Nuclear force exists between
A. Proton proton
B. Neutron -neutron
C. neutron -proton
D. All of these
5 Mosley's law establishes the X-rays fluorescence of target element with is.
A. Atomic weight
B. Atomic number
C. Density
D. Lattice constant
6 Which one of the following has maximum frequency.
A. Visible light
B. Gama rays
C. Ultraviolet rays
D. Infrared rays
7 Which is the famous standard model of the universe.
A. the big bang
B. Casmos
C. Astronaut
D. The small stap
8 The half life of a radioactive substance as compared to its mean lif eis.
A. 30%
B. 50%
C. 70%
D. 90%
9 The advantage of electron tube over a transistor is.
A. Its high efficiency
B. Its high gain
C. Low consumption of power
D. Low input impedance
10 The process of pair production will take place if the energy of photon is greater than
A. 0.21 MeV
B. 0.51 MeV
C. 1.51 MeV
D. 1.21 MeV

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