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 describes that the time interval between two events may be different in different of references

Question # 2

The critical mass of a fission reaction is.

Question # 3

LASER beam my be measure very large distance because it is.

Question # 4

Mass -energy relation means that the product of mass times the square of the speed of light must be equal to.

Question # 5

In radiotherapy X-rays are used to.

Question # 6

The continuous X rays spectrum is due to an effect.

Question # 7

The process of energy generation in sun and stars is.

Question # 8

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

Question # 9

Half life of a radioactive elements 10 minutes If the initial cont. rate is 368 counts per minute for what time count rate reaches 32 counts per minute.

Question # 10

Matter waves

Question # 11

the gain of an amplifier is independent of

Question # 12

The SI unit of radioactivity is.

Question # 13

The process of conversation of a photon into an electron and a position is called.

Question # 14

Special theory of relativity deals with the events in the frames of reference which move with constant.

Question # 15

What is the energy equivalent to amu in Me V

Question # 16

When transistor works as an amplifier, its output is.

Question # 17

In electromagnetic spectrum X-rays are next to.

Question # 18

Which animal did Erwin Schrodinger contemplate using in his famous thought experiment.

Question # 19

The helium nucleus does not contain

Question # 20

The usefulness of X rays is largely due to their

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The reciprocal of decay constant lamda of a radioactive element is.
A. Half life
B. Mean life
C. Total life
D. Curie
2 The angle of scattering for which the Compton shift is maximum is.
A. 0 o
B. 45 o
C. 80 o
D. 180 o
3 Which of the following is the most commonly used regions of operations for a transistor.
A. Cut off
B. Saturation
C. Active
D. All of these
4 If an object moves with velocity of light the apparent mass of the object as compared to list original mass is
A. greater
B. Smaller
C. Same
D. zero
5 The division and germier experiment relates to
A. Diffusion
B. interference
C. Polarization
D. Electron diffraction
6 An oscillator is basically an amplifier with loop gain
A. Zero
B. Less than unity
C. More than unity
D. Infinity
7 The emission of photons by a metal when electrons are incident is called.
A. Photo electric effect
B. Pair production
C. X-rays production
D. Gama ray production
8 Why is a capacitor resistor combination used in oscillators in grid circuit.
A. To generate oscillation
B. To bias the grid automatically
C. To amplify oscillations
D. To sustain the oscillations.
9 Which one of the following has the largest wavelength.
A. x rays
B. Infrared rays
C. Visible light
D. Radio waves
10 Which of the following is the most massive particle.
A. Deuteron
B. Alpha particle
C. Neutron
D. positron

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