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 mass defect of Bohr's atomic model is

Question # 2

Nuclear force exists between

Question # 3

The Compton effect in X-rays proves that

Question # 4

One becquerel is equal to

Question # 5

Half life and mean lifetime of a radioactive element are.

Question # 6

How positives feedback will effect an amplifier.

Question # 7

The half life of a radioactive substance is 6 years What is the time taken by 12 g of this substance to decay completely.

Question # 8

A transistor consists of.

Question # 9

Though the wavelength of X-rays is smaller than that of visible light yet the speed of X-rays in vacuum is.

Question # 10

X-rays are not used in RADARs because

Question # 11

Mass -energy relation means that the product of mass times the square of the speed of light must be equal to.

Question # 12

In Compton's effect the change in wavelength of a scattered photon is called.

Question # 13

The half life of a radioactive substance depend on.

Question # 14

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

Question # 15

Emitter follower amplifier is an example of.

Question # 16

At room temperature the potential difference between the two sides of depletion region for silicon is of the order of.

Question # 17

Which of the following is the most massive particle.

Question # 18

Which of the following has the highest relative biological effectiveness or the quality factor.

Question # 19

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

Question # 20

The continuous x rays spectrum is obtained due to

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The continuous X rays spectrum is due to an effect.
A. Bremsstrahlung
B. Breaking radiation
C. Holography
D. both a and b
2 The two elements with same number of electrons but different mass number are called.
A. Isotones
B. Isobars
C. Isotopes
D. Isomers
3 The process of energy generation in sun and stars is.
A. Fusion of heavy nuclei
B. fusion of light nuclei
C. Fission of light nuclei
D. Solar panels
4 There are how many types of forces or interactions.
A. Two
B. Three
C. Four
D. Five
5 In Compton's effect it was considered that X-rays consist of
A. Electrons
B. Holes
C. Neutrons
D. Protons
6 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
7 A transistor consists of.
A. One p-n junction
B. Two p-n junctions
C. Three p-n junctions
D. Four p-n junction
8 An operational amplifier can be used as a
A. Comparator
B. Night switch
C. Inverting and non inverting amplifier
D. All of the above
9 The SI unit of equivalent dose is
A. Seivert
B. Gray
C. Radian
D. Rem
10 Why is a capacitor resistor combination used in oscillators in grid circuit.
A. To generate oscillation
B. To bias the grid automatically
C. To amplify oscillations
D. To sustain the oscillations.

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