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

The term used for the emission of electrons when light strikes a surface.

Question # 2

Why transistor is preferred to triode valve for use as an amplifier.

Question # 3

One particle having zero mass and zero charge is.

Question # 4

X-rays are also used for

Question # 5

The phenomenon of Compton's effect process that right has

Question # 6

In fission reaction, heavy water is used as a

Question # 7

Current gain of a CE amplifier is 50, ITS hfe is about

Question # 8

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

Question # 9

Binding energy per nucleon is.

Question # 10

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

Question # 11

The input resistance of a JFET is of the order of.

Question # 12

The electrons behave as wave because.

Question # 13

Ionization of a hydrogen atom originally in its ground state takes a minimum out of energy equal to.

Question # 14

Specially designed solid state detector can be used to detect.

Question # 15

The wavelength of X-rays is of the ofder of.

Question # 16

The total number nucleons in a nucleus are called.

Question # 17

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

Question # 18

NOR gate is a combination of.

Question # 19

Lissajou's figures are used in a Cathode Ray Oscilloscope while measuring.

Question # 20

The ionization energy for hydrogen atom is

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Radio carbon in the atmosphere is produced by the bombardment of.
A. Oxygen by high energy neutrons
B. Oxygen by high energy protons
C. Nitrogen by high energy protons
D. Nitrogen by high energy neutrons
2 When a posirtron is emitted it causes.
A. Mass number to increase by one
B. mass number to decrease by one
C. Atomic number to decrease by one
D. Atomic number to increase by one
3 LASER is a device which can produce.
A. Monochromatic beam of light
B. Coherent beam of light
C. An intense beam of light
D. All of the above
4 From which radiation it is most difficult to protect oneslelf.
A. Alpha radiation
B. Beta radiation
C. Gama radiation
D. Heat radiation
5 Which of the following is required for maintaining sustained chain reaction.
A. Neutrons
B. Protons
C. Electrons
D. Photons
6 48 days after the receipt the amount of iodine -131 left behind is only.
A. 0.1325 g
B. 0.2135 g
C. 0.3125 g
D. 0.1235 g
7 The potential due to which an electron is lifted from gerund state to excited state is.
A. Potential gradient
B. excitation potential
C. Ionization potential
D. Potential difference
8 Though the wavelength of X-rays is smaller than that of visible light yet the speed of X-rays in vacuum is.
A. longer that that of visible light
B. Smaller than that of visible light
C. Same as that of visible light
D. Unpredictable
9 According to Max. Planck, energy is released or absorbed in discrete packets called.
A. quanta
B. Meson
C. Energy shells
D. Position
10 What is the scale for measurement of Banbridge mass spectrograph.
A. Linear
B. Inverse
C. Exponential
D. Logarithmic

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