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

00:00
Question # 1

When using the formula E = h lambda what unit should energy have.

Question # 2

The SI unit of current gain is.

Question # 3

Work function is generally expressed in.

Question # 4

What do we study by crystallography.

Question # 5

A solid state detector is basically

Question # 6

Usually in an operational amplifier the inputs used are of

Question # 7

The wavelength of Lyman series for hydrogen spectrum lies in the.

Question # 8

Which one of the following is a convenient energy unit to express the energy of sub atomic particles.

Question # 9

Beta decay may occur by

Question # 10

What is the scale for measurement of Banbridge mass spectrograph.

Question # 11

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

Question # 12

As oscillator is basically an amplifier with loop gain

Question # 13

In the experiment of production of X rays electrons are accelerated towards the anode by

Question # 14

In an electronic transition atom cannot emit

Question # 15

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

Question # 16

The phenomenon is which the wavelength of scattered X-rays is larger than the incident X-rays is known as.

Question # 17

The path of electron in Rutherford atomic model according to classical theory a.

Question # 18

The output of two input OR gate is zero only when its.

Question # 19

Mean life of a radioactive sample is 100 s its half life will be

Question # 20

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

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 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
2 Which given quantity remains the same in isotones.
A. Mass number
B. Atomic number
C. Number of neutrons
D. Number of protons
3 Which one of the following is a convenient energy unit to express the energy of sub atomic particles.
A. Joule
B. electron volt
C. Watt
D. Curie
4 The transition of inner shell electrons in heavy atoms gives rise to the emission of.
A. Low energy b-particle
B. High energy b-particle
C. High energy X- rays
D. High energy gama rays
5 In the Geiger Marsden experiment a narrow beam of alpha particles was fired at a thin piece of Gold foil in a vacuum Some of the particles were scattered though large angles The result of the experiment provided evidence for the existence of.
A. A very small charged nucleus
B. electrons orbiting the nucleus
C. Neutrons in the nucleus
D. Nuclear reaction
6 The half life of a radioactive substance as compared to its mean lif eis.
A. 30%
B. 50%
C. 70%
D. 90%
7 The two elements with same number of electrons but different mass number are called.
A. Isotones
B. Isobars
C. Isotopes
D. Isomers
8 Which particle are not emitted by a radioactive substance.
A. Alpha particles
B. Beta particles
C. Gama particles
D. Neutrons
9 A transistor can be used as
A. Oscillator
B. Amplifier
C. Switch
D. Both a and c
10 At room temperature the potential difference between the two sides of depletion region for silicon is of the order of.
A. 0.3 v
B. 0.5 V
C. 0.7 V
D. 0.9 V

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