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

Which of the following is the most commonly used regions of operations for a transistor.

Question # 2

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

Question # 3

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

Question # 4

Which of the following can be used as an arrester in a nuclear reactor.

Question # 5

The Beta particles move along.

Question # 6

Which particle is removed by a photon.

Question # 7

A deuteron is

Question # 8

The reciprocal of decay constant lamda of a radioactive substances is equal to.

Question # 9

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

Question # 10

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

Question # 11

A perfect back body

Question # 12

What is the quantitative description of the effect of radiation on the living tissue.

Question # 13

The critical mass of fissionable uranium -235 can be reduced by

Question # 14

In which of the following controlled nuclear chain reaction is used to liberate energy.

Question # 15

The best shield against Gama rays would be of

Question # 16

Why hydrogen atom does not emit x-rays.

Question # 17

The converse of pair production is

Question # 18

The resistance between(+) and (-) inputs of an amplifier is.

Question # 19

The necessary condition for nuclear fusion is.

Question # 20

the gain of an amplifier is independent of

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 What is the quantitative description of the effect of radiation on the living tissue.
A. Radiation dosimetry
B. Radioactive dating
C. Telemetry
D. Dosage
2 The best shield against Gama rays would be of
A. Heavy water
B. Aluminium
C. Iron
D. Lead
3 If we use two diodes and a centre tapped transformer we eill get
A. Transistor
B. Amplifier
C. Half wave rectifier
D. Full wave rectifier
4 X-rays are also used for
A. Ultrasound imaging
B. endoscopy
C. Computerized tomography scanning
D. Magnetic resonance imaging scanning
5 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
6 The two elements with same number of electrons but different mass number are called.
A. Isotones
B. Isobars
C. Isotopes
D. Isomers
7 At high temperature a body generally emits redactions of.
A. Small wavelengths
B. Long wavelengths
C. Moderates wavelengths
D. Zero wavelengths
8 Bohr's atomic model assumes
A. Nucleus is of infinite mass and is at rest
B. electron in a quantized orbit will not radiate energy
C. Mass of electron remains the same
D. All of the above
9 A newly prepared radioactive nuclide has a decay constant Lamda of 10-6 s-1 What is the approximate half life of the nuclide.
A. 1 hour
B. 1 day
C. 1 week
D. 1 month
10 There are how many types of forces or interactions.
A. Two
B. Three
C. Four
D. Five

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