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

  • Total Questions20

  • Time Allowed20

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PPSC Physics Topic 7 Modern Physics

00:00
Question # 1

When Be is bombarded by alpha particles, then we obtain

Question # 2

In Compton's effect the change in wavelength of a scattered photon is called.

Question # 3

Which type of amplifier causes minimum drain of power supply.

Question # 4

Which particles have spin quantum number 1/2

Question # 5

X-rays travel with

Question # 6

Choose the one which acts as single inverter.

Question # 7

The term used for the emission of electrons when light strikes a surface.

Question # 8

In a nuclear reactor chani reaction is controlled by introducing.

Question # 9

Which of the following radiations can penetrate 20 cm thick steel.

Question # 10

An AND gate is.

Question # 11

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

Question # 12

The unit of Rydberg constant R is

Question # 13

Besides U 235 what else is needed for making as atomic bomb.

Question # 14

Which both elements are good for nuclear fission.

Question # 15

The half life of a radioactive element depends upon.

Question # 16

Which of the following is the most massive particle.

Question # 17

Two electrons approach each other their relative velocity will be.

Question # 18

The relationship between mass number atomic number and neutron number is.

Question # 19

Ionization of a hydrogen atom originally in its ground state takes a minimum out of energy equal to.

Question # 20

For an electron or position the rest mass energy is equal to.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The binary equivalent of 25 is
A. 111001
B. 11001
C. 1001
D. 10101
2 The mass of proton is equal to.
A. 1.673 x 10-27 kg
B. 1.673 x 1027 kg
C. 9.1 x 10-31 kg
D. 9.1 x 1031 kg
3 Lissajou's figures are used in a Cathode Ray Oscilloscope while measuring.
A. Time period
B. Frequency
C. Voltage gain
D. phase angle
4 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.
A. 1/4
B. 1/8
C. 1/16
D. 1/32
5 The loss of mass in a.m.u in a nuclear change can be calculated from energy involved in MeV by
A. Dividing by 931
B. Multiplying by 931
C. Diving by 391
D. Multiplying by 391
6 The most readily fissionable isotope of uranium has atomic mass of
A. 234
B. 235
C. 236
D. 238
7 The relationship between mass number atomic number and neutron number is.
A. A = Z + N
B. A = Z - N
C. Z = A + N
D. N = Z - A
8 In heavy elements of the periodic table the number of neutrons than protons are.
A. Lesser
B. Greater
C. Equal
D. Undetermined
9 Marie Curie and Pierre Curie discovered two new radioactive elements which are.
A. Uranium and radkum
B. Platinum and radium
C. Polonium and radium
D. Crypton and radon
10 When a platinum wire is heated of 1600 oC, it becomes
A. orange
B. Cherry red
C. Dull red
D. White

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