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

Nuclear force exists between

Question # 2

Neither the position nor the momentum of a particle can be predicted with arbitrarily great precision is the statement of.

Question # 3

The angular speed of an electron in the nth orbit of Bohr's hydrogen atom is.

Question # 4

Why hydrogen atom does not emit x-rays.

Question # 5

In a transistor which one is very thin.

Question # 6

Which of the following are particle accelerators.

Question # 7

Tracer techniques make use of.

Question # 8

The capture of neutron by a proton results in the formation of.

Question # 9

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

Question # 10

If an object moves with velocity of light the apparent length of the object moving the direction of motion becomes.

Question # 11

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

Question # 12

In order to reduce uncertainty in momentum one must use light of.

Question # 13

The Beta particles move along.

Question # 14

Which one of the following has the largest wavelength.

Question # 15

Which term given below refers to the concept moving clocks run slower than clocks at rest w.r.t an observer.

Question # 16

Which of the following phenomenon is explained by the tunnel efffect.

Question # 17

Which uranium isotope having the atomic weights as given below is easily fissionable.

Question # 18

In de Brogile model electron orbit must form

Question # 19

X-rays are absorbed maximum by

Question # 20

In an electronic transition atom cannot emit

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The scientific theory concerning the coming into existence of universe.
A. Cosmology
B. Cosmogony
C. Cosmography
D. Cosmos
2 The advantage of electron tube over a transistor is.
A. Its high efficiency
B. Its high gain
C. Low consumption of power
D. Low input impedance
3 In a Geiger Marsden experiment why do the great majority of the Alpha particles pass straight through the metal foil.
A. Atomic nuclei may contain neutrons
B. Atoms are electrically neutral
C. Atoms are largely empty space
D. Atoms have positively charged nuclei
4 In which reaction two or more small light nuclei nuclei come together or fuse to form a large nucleus.
A. Radioactivity
B. Radioactivity dating
C. Nuclear fusion
D. Nuclear fission
5 Induced fission result from the absorption of
A. electron
B. Proton
C. Nucleon
D. Neutron
6 Which of the following is basic transistor configuration.
A. CB
B. CC
C. CE
D. All of these
7 As the mass number increases, the binding energy per nucleon in a nucleus
A. Increases
B. Decreases
C. Remain constant
D. Varies in a way that depends upon A
8 Low frequency response of an amplifier is mainly limited by.
A. Biasing configuration
B. Coupling capacitor
C. By pass capacitor
D. Input impedance
9 Isotopes are the atoms of the same elements which contain equal number of.
A. Nucleus
B. Neutrons
C. Protons
D. Electrons
10 the wavelength of continuous X-rays is inversely proportional to.
A. Intensity of incident electron beam
B. Temperature of the target
C. Intensity of X-rays
D. The energy of electrons striking the target

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