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

00:00
Question # 1

In scattering experiment which force scatters alpha particle.

Question # 2

The potential due to which an electron is lifted from gerund state to excited state is.

Question # 3

Which of the following are electromagnetic waves.

Question # 4

The SI unit of radioactivity is.

Question # 5

Which BJT configurations used for signal inversion.

Question # 6

How many terminals does a BJT have.

Question # 7

Radioactive substances do not emit

Question # 8

A perfect back body

Question # 9

The half life of uranium -238 is

Question # 10

Which term given below refers to the concept moving clocks run slower than clocks at rest w.r.t an observer.

Question # 11

Which one of the following has maximum frequency.

Question # 12

Positron are produced during.

Question # 13

A darling ion amplifier is characterized by

Question # 14

The decay process in which an unstable nucleus splits into two fragments of comparable mass is known as.

Question # 15

One rem is equal to.

Question # 16

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

Question # 17

X-ray are

Question # 18

Deuterium is

Question # 19

the alpha particle does not travel for enough in air.

Question # 20

Bohr's atomic model assumes

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Choose the one which acts as single inverter.
A. Common emitter
B. common collector
C. Common base
D. Diode
2 In order to reduce uncertainty in momentum one must use light of.
A. Short wavelength
B. Large wavelength
C. Wavelength of intermediate value
D. Wavelength of any value
3 In Compton's effect it was considered that X-rays consist of
A. Electrons
B. Holes
C. Neutrons
D. Protons
4 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
5 Which uranium isotope having the atomic weights as given below is easily fissionable.
A. 234
B. 235
C. 236
D. 238
6 Which of the following properties is not exhibited by X-rays.
A. Interference
B. Diffraction
C. Polarization
D. Deflection of electric field
7 Both xenon and cesium each have
A. 24 isotopes
B. 28 isotopes
C. 32 isotopes
D. 36 isotopes
8 The most familiar example of radioactive dating is.
A. Nitrogen dating
B. Carbon dating
C. Hydrogen dating
D. Helium dating
9 The radius of second orbit of hydrogen atom is
A. 0.071 A
B. 0.142 A
C. 4.752 A
D. 9.5298 A
10 Which of the following radiations can penetrate 20 cm thick steel.
A. Alpha particles
B. Beta particles
C. Gama particles
D. Neutrons

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