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

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PPSC Physics Topic 7 Modern Physics

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Question # 1

The energy equivalent of 1 kg of matter a

Question # 2

Half life and mean lifetime of a radioactive element are.

Question # 3

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

Question # 4

An emitter follower has

Question # 5

Radioactivity is the phenomenon associated with the.

Question # 6

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

Question # 7

As the mass number varies, which of the quantities does not change w.r.t nucleus.

Question # 8

A logic circuit whose output signal is '1' when inputs are different is.

Question # 9

An oscillator is basically an amplifier with loop gain

Question # 10

An active component of an electronic circuit consisting of a small block of semiconducting material to which at least three electrical contacts are made is known as.

Question # 11

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.

Question # 12

Which BJT configurations used for signal inversion.

Question # 13

Isotopes are the atoms of the same elements which contain equal number of.

Question # 14

A gama ray of energy 1900 MeV is absorbed by

Question # 15

48 days after the receipt the amount of iodine -131 left behind is only.

Question # 16

The SI unit of decay constant is.

Question # 17

Which both elements are good for nuclear fission.

Question # 18

Which of the following propagates at the same speed as velocity of light.

Question # 19

X-rays are not used in RADARs because

Question # 20

Which one among these contacts in a transistor is non rectifying.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Compton scattering experiment seemed to indicate that radiation had
A. Wave nature
B. Particle nature
C. Wave particle nature
D. X-rays nature
2 In Compton's effect it was considered that X-rays consist of
A. Electrons
B. Holes
C. Neutrons
D. Protons
3 The 'x' in X-rays means
A. Xenon
B. Explosion
C. x for unknown
D. X makes the spot
4 At high temperature a body generally emits redactions of.
A. Small wavelengths
B. Long wavelengths
C. Moderates wavelengths
D. Zero wavelengths
5 In n-p-n transistor the current flows in the direction from
A. Emitter to base
B. emitter to collector
C. Base to emitter
D. Base to collector
6 In a Nuclear reactor which material is often used as modeerator.
A. Water
B. Graphite
C. Uranium
D. Water and graphite
7 Which animal did Erwin Schrodinger contemplate using in his famous thought experiment.
A. mouse
B. Cat
C. Dog
D. Rabbit
8 For the normal operation of transistor the emitter base junction is always.
A. Zero biased
B. Reverse biased
C. Forward bised
D. Both a and b
9 In an electronic transition atom cannot emit
A. Gama rays
B. Visible rays
C. Infrared rays
D. Ultraviolet rays
10 What do we study by crystallography.
A. The analysis of X ray spectra of elements and study of crystal structure.
B. Visible spectra of sources and crystal study
C. Ultraviolet spectra of sources and crystal study
D. Characteristics of X-rays

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