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

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

Question # 2

The working of cloud chamber is based in the presence of.

Question # 3

The half life of isotopes X is four days and its initial mass is 32 mg What mass of the isotope X will remain after twelve days.

Question # 4

X-rays are also used for

Question # 5

The half life of uranium -238 is

Question # 6

Push pull amplifiers employ

Question # 7

The total number nucleons in a nucleus are called.

Question # 8

The decay process in which an unstable nucleus splits into two fragments of comparable mass is known as.

Question # 9

The phenomenon of Compton's effect process that right has

Question # 10

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

Question # 11

Which both elements are good for nuclear fission.

Question # 12

The absorption of X-rays in a given material follows.

Question # 13

Cosmic rays mostly comprise of

Question # 14

Why is a capacitor resistor combination used in oscillators in grid circuit.

Question # 15

One becquerel is equal to

Question # 16

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

Question # 17

The decay to form other nuclides by emitting particles and electromagnetic radiations by unstable nuclides is called.

Question # 18

In CE amplifier phased reversal occurs when the output voltage is taken between

Question # 19

The unit of Rydberg constant R is

Question # 20

Mosley's law establishes the x rays fluorescence's of target element with its.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The SI unit of equivalent dose is
A. Seivert
B. Gray
C. Radian
D. Rem
2 Which of the following phenomenon is observed in obtaining an X ray photograph of our hand.
A. Photoelectric effect
B. Zeeman effect
C. Shadow photography
D. Ionization
3 The decay process in which an unstable nucleus splits into two fragments of comparable mass is known as.
A. Nuclear fission
B. nuclear fusion
C. Radioactivity
D. Carbon dating
4 Mass -energy relation means that the product of mass times the square of the speed of light must be equal to.
A. Torque
B. Momentum
C. Energy
D. Impulse
5 Most widely used types of gas LASER are
A. Neon
B. Argon ion
C. Helium
D. All of these
6 In a cloud chamber the Alpha particles leave
A. Dense, straight and continuous tracks
B. Only straight and continuous tracks
C. Thin and discontinuous tracks
D. Irregular tracks
7 The energy of neutrons obtained during a fission reaction is.
A. 0.1 MeV
B. 1 KeV
C. 1 MeV
D. Zero
8 Cosmic rays mostly comprise of
A. Neutral particles
B. Negative charged particles
C. Positively charged particles
D. Ions
9 The reciprocal of decay constant lamda of a radioactive substances is equal to.
A. total life
B. Half life
C. Mean life
D. Curie
10 Lissajou's figures are used in a Cathode Ray Oscilloscope while measuring.
A. Time period
B. Frequency
C. Voltage gain
D. phase angle

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