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.

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PPSC Physics Chapter 7 Important MCQ's

Sr.#	Question	Answer
1	The angular speed of an electron in the nth orbit of Bohr's hydrogen atom is.	A. Directly proportional to n B. Directly proportional to n2 C. Inversely proportional to n D. Inversely proportional to n2
2	The phenomenon in which a photon of frequency 'f' is scattered by an electron and the scattered photon has frequency f <f is known as.	A. Pair production B. Pair annihilations C. Photoelectric effect D. Compton's effect
3	How positives feedback will effect an amplifier.	A. Increases the voltage gain B. Decreases the voltage gain C. Imitates oscillation to occur D. Damaged it
4	Which term given below refers to the concept moving clocks run slower than clocks at rest w.r.t an observer.	A. Simultaneously B. Mass variation C. time dilation D. Length contraction
5	Which of the following has greatest binding energy per nucleon.	A. Normal hydrogen B. Deuterium C. Tritium D. Helium-4
6	X-rays spectrum may be	A. Continuous spectrum B. Discontinuous spectrum C. Line spectrum D. Continuous and line spectrum
7	A freshly made sample of radioactive material gives a count rate of 8,000 counts per minute After twenty days it gives a count rate of 500 counts per minute What is the half life of the materials.	A. 5 days B. 10 days C. 40 days D. 20 days
8	The energy of neutrons obtained during a fission reaction is.	A. 0.1 MeV B. 1 KeV C. 1 MeV D. Zero
9	Which of the following is not a mode of radioactive decay.	A. Positron emission B. Electron capture C. Fusion reaction D. A decay
10	The two elements with same number of electrons but different mass number are called.	A. Isotones B. Isobars C. Isotopes D. Isomers

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PPSC Physics Topic 7 MCQ Test With Answer

MCQ's Test For PPSC Physics Topic 7 Modern Physics

PPSC Physics Topic 7 Modern Physics

When an electron and a positron are annihilated, then number of protons produced is.

The particles equal in mass or greater than protons are called.

X-rays are also used for

The SI unit of equivalent dose is

Tracer techniques make use of.

The value of open loop gain for the amplifier is

Emitter follower amplifier is an example of.

The converse of pair production is

Which one of the following quantities is conserved in a nuclear reactor.

Which of the following is not an electromagnetic wave.

Which particles have spin quantum number 1/2

The emission of photons by a metal when electrons are incident is called.

Special theory of relativity deals with the events in the frames of reference which move with constant.

In heavy atims the electrons are assumed to be arranged in.

Which animal did Erwin Schrodinger contemplate using in his famous thought experiment.

The average energy released per fission of U is about

The electrons behave as waves, because they can .

X-rays are not used in RADARs because

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

In a resistor, when base width decreases with increasing Vbc, this phenomenon is called.

Prepare Complete Set Wise PPSC Physics Topic 7 Modern Physics MCQs Online With Answers

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Set 12

Set 13

Set 14

Set 15

Set 16

Set 17

Set 18

Set 19

Set 20

Set 21

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PPSC Physics Chapter 7 Important MCQ's

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