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

When Be is bombarded by alpha particles, then we obtain

Question # 2

The electrons behave as waves, because they can .

Question # 3

The most suitable material for moderator in a nuclear reactor is.

Question # 4

Which circuit elements has two stable states and can be used to store information.

Question # 5

Which of the following atom pair have the same structure.

Question # 6

Which type of amplifier causes minimum drain of power supply.

Question # 7

The half life of uranium -238 is

Question # 8

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 # 9

In a photocell, certain metals emit electrons for

Question # 10

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

Question # 11

Which of the following is invariant under Galilean transformation.

Question # 12

The SI unit of decay constant is.

Question # 13

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 # 14

The SI unit of absorbed dose in.

Question # 15

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.

Question # 16

When light of particular frequency is allowed to fall upon a metal surface electrons are emitted from a these emitted electrons are called.

Question # 17

The usefulness of X rays is largely due to their

Question # 18

Which of the following is deflected by an electric field.

Question # 19

A logic circuit with one input and one output that inverts the input signal at the output is.

Question # 20

What is the energy equivalent to amu in Me V

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Hydrogen bomb is based on
A. Controlled chain reaction
B. Uncontrolled chain reaction
C. Nuclear fusion
D. Nuclear fission
2 In radiotherapy X-rays are used to.
A. Treat cancer
B. Delect bone fracture
C. Cure heart diseasee
D. All of the above
3 What is the quantitative description of the effect of radiation on the living tissue.
A. Radiation dosimetry
B. Radioactive dating
C. Telemetry
D. Dosage
4 The constant lamda is called the.
A. Decay constant
B. Gas constant
C. Planck's constant
D. Dose constant
5 Which of the following is its own anti particle.
A. Photon
B. Electron
C. Proton
D. positron
6 When using the formula E = h lambda what unit should energy have.
A. Joule
B. Watt second
C. Newton metre
D. Electron volt
7 The emission of photons by a metal when electrons are incident is called.
A. Photo electric effect
B. Pair production
C. X-rays production
D. Gama ray production
8 Which of the following radiations will burn human skin
A. Infrared
B. Ultraviolet
C. X rays
D. Alpha particles
9 Positron are produced during.
A. Annihilation
B. ionization
C. Pair production
D. x rays production
10 The unit of Rydberg constant R is
A. m
B. m3
C. m-1
D. m-2

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