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

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Question # 2

Which one of the following gates in a a universal gate.

Question # 3

Particle which can be added to the nucleus of an atom with changing its chemical properties are called.

Question # 4

In a nuclear reactor chani reaction is controlled by introducing.

Question # 5

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

Question # 6

Base current of a transistor is 1 mA and collector current is 99 mA What is emitter current.

Question # 7

Two electrons approach each other their relative velocity will be.

Question # 8

Which of the following is its own anti particle.

Question # 9

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

Question # 10

The gama rays have

Question # 11

The neutral atoms of all isotopes of the same element contain the same numbers of.

Question # 12

When a platinum wire is heated of 1600 oC, it becomes

Question # 13

The value of principal quantum number for an ionized atom is.

Question # 14

Half life and mean lifetime of a radioactive element are.

Question # 15

LASER is a device which can produce.

Question # 16

The most abundant isotope of neon is.

Question # 17

Transistor are made from

Question # 18

Which of the following is believed to be carrier o nuclear forces.

Question # 19

Which one of the following has the largest wavelength.

Question # 20

The half life of a radioactive element depends upon.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The part of theory of relativity which deals with accelerated bodies is called.
A. special theory of relativity
B. General theory of relativity
C. Lorentz's theory of relativity
D. Galilean theory of relativity
2 An increase in frequency above threshold frequency results in.
A. Increase in photo electric current
B. Increase in K.E. of electrons
C. Decrease in photoelectric current
D. Decreases in K.E. of electrons
3 The 'x' in X-rays means
A. Xenon
B. Explosion
C. x for unknown
D. X makes the spot
4 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
5 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
6 According to Max. Planck, energy is released or absorbed in discrete packets called.
A. quanta
B. Meson
C. Energy shells
D. Position
7 An important property of an ideal power supply is.
A. Infinite internal resistance
B. Zero internal resistance
C. Large output resistance
D. Small output resistance
8 Atomic reactor is based on
A. Controlled chain reaction
B. Uncontrolledly chain reaction
C. Nuclear fission
D. Nuclear fusion
9 The minimum amount of energy in an individual electron has to gain to escape from a particular surface is called.
A. Threshold frequency
B. work function
C. Wave number
D. Kinetic energy
10 Ionization of a hydrogen atom originally in its ground state takes a minimum out of energy equal to.
A. 2.4 J
B. 4.2 J
C. 12.3 eV
D. 13.6 eV

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