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

If an object moves with velocity of light the apparent mass of the object as compared to list original mass is

Question # 2

In order to reduce uncertainty in momentum one must use light of.

Question # 3

The ionization potential of hydrogen atom is.

Question # 4

X-rays are not used in RADARs because

Question # 5

Mosley's law establishes the x rays fluorescence's of target element with its.

Question # 6

A perfect back body

Question # 7

One rem is equal to.

Question # 8

The mass of proton is equal to.

Question # 9

Induced fission result from the absorption of

Question # 10

Beta decay may occur by

Question # 11

The maximum K.E. with which photoelectrons are emitted depends very strongly on the.

Question # 12

What do we study by crystallography.

Question # 13

A deuteron is

Question # 14

A photon is chasing an electron, whose speed is 0.9 c What is their relative speed.

Question # 15

Which one of the following is a convenient energy unit to express the energy of sub atomic particles.

Question # 16

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

Question # 17

When an object moves with a very high speed the length in the direction of motion.

Question # 18

LED is a p-n junction that emits

Question # 19

Which of the following radiations will burn human skin

Question # 20

For the normal operation of transistor the emitter base junction is always.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Which experiment is a demonstration that matter and energy can display properties of both waves and particles.
A. young's double slit experiment
B. Division germier experiment
C. Heisenberg's uncertainty experiment
D. Stern Gerlach experiment
2 A single quantum of electromagnetic radiation is termed as.
A. Compton
B. Photon
C. Hyperon
D. Meson
3 Tracer techniques make use of.
A. Neutron scattering
B. Electron beams
C. LASER
D. Radioactive isotopes
4 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
5 When using the formula E = h lambda what unit should energy have.
A. Joule
B. Watt second
C. Newton metre
D. Electron volt
6 The electron behave an waves because
A. They can be diffracted by a crystal
B. They can produce ions in gases
C. They can be deflected by magnetic field
D. They can be deflected by electric field
7 In a resistor, when base width decreases with increasing Vbc, this phenomenon is called.
A. Tunneling
B. Thermal runway
C. Pinch off
D. Early effect
8 the wavelength of continuous X-rays is inversely proportional to.
A. Intensity of incident electron beam
B. Temperature of the target
C. Intensity of X-rays
D. The energy of electrons striking the target
9 Sub atomic particles which experience strong nuclear force are.
A. Leptons
B. Hadrons
C. Mesons
D. Quarks
10 If an object moves with velocity of light the apparent mass of the object as compared to list original mass is
A. greater
B. Smaller
C. Same
D. zero

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