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

  • Total Questions20

  • Time Allowed20

PPSC Physics Topic 7 Modern Physics

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Question # 1

A darling ion amplifier is characterized by

Question # 2

The neutral atoms of all isotopes of the same element contain the same numbers of.

Question # 3

Which of the following is required for maintaining sustained chain reaction.

Question # 4

Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.

Question # 5

The chain reaction is controlled by a series of rods usually made of.

Question # 6

When of the following radiations are not emitted by electron transitions in atoms.

Question # 7

The 'x' in X-rays means

Question # 8

Which of the following is not a mode of radioactive decay

Question # 9

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 # 10

X-ray are

Question # 11

Photocells are used for

Question # 12

The process by which nuclei emit a ,b and gama rays in order to attain stability is called.

Question # 13

If the base emitter junction is forward biased and base collector junction is reverse biased the BJT is in.

Question # 14

Which particle has zero charge and zero rest mass.

Question # 15

The half life of a given radioactive isotope is 10 years The original mass of the isotope is 12 g What mass of this isotope remains un decayed after 20 years.

Question # 16

On which factor cut off wavelength of X-rays coming from a Coolidge tube depends upon.

Question # 17

The angular speed of an electron in the nth orbit of Bohr's hydrogen atom is.

Question # 18

What is the basic advantage of class A operation of an amplifier.

Question # 19

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

Question # 20

The total energy of the hydrogen atom is

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Which given quantity remains the same in isotones.
A. Mass number
B. Atomic number
C. Number of neutrons
D. Number of protons
2 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
3 NOR gate is a combination of.
A. OR gate and NOT gate
B. OR gate and AND gate
C. OR gate and OR gate
D. NOT gate and AND gate
4 LASER beam my be measure very large distance because it is.
A. Inidirectional
B. coherent
C. Monochromatic
D. Not absorbed
5 Which configuration is used to connect high impedance source to a low impedance lead.
A. CE
B. CB
C. CC
D. BE
6 The bunding energy per nucleon for iron is.
A. zero
B. Maximum
C. Negative
D. Minimum
7 In which of the following studies x-rays are not helpful.
A. Crystal structure
B. Crystal surface
C. Crystal symmetry
D. Crystal atoms
8 A photon is chasing an electron, whose speed is 0.9 c What is their relative speed.
A. 0.1 C
B. C
C. 0.8 C
D. 0.9 C
9 Specially designed solid state detector can be used to detect.
A. Alpha particles
B. Beta particles
C. Gama rays
D. X- rays
10 The SI unit of absorbed dose in.
A. Bel
B. Weber
C. Rem
D. Grey

Test Questions