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

Base current of a transistor is 1 mA and collector current is 99 mA What is emitter current.

Question # 2

Which of the following is the most commonly used regions of operations for a transistor.

Question # 3

In the fusion process, there are

Question # 4

In heavy atims the electrons are assumed to be arranged in.

Question # 5

The bunding energy per nucleon for iron is.

Question # 6

The ionization potential of hydrogen atom is.

Question # 7

X-rays are absorbed maximum by

Question # 8

the alpha particle does not travel for enough in air.

Question # 9

At high temperature a body generally emits redactions of.

Question # 10

LASER beam my be measure very large distance because it is.

Question # 11

When light of particular frequency is allowed to fall upon a metal surface electrons are emitted from a these emitted electrons are called.

Question # 12

How many types of quarks were suggested i 1964 quark theory.

Question # 13

The necessary condition for nuclear fusion is.

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Which of the following is believed to be carrier o nuclear forces.

Question # 19

Which given quantity remains the same in isotones.

Question # 20

Which given element has lowest work function

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 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
2 The Inner electrons in heavy atoms can be disturbed and dislodged by.
A. X rays
B. Alpha particle
C. Beta particles
D. gama particles
3 The value of principal quantum number for an ionized atom is.
A. 13.6 eV
B. 27.2 eV
C. 54.4 eV
D. 100 eV
4 An operational amplifiers will act as an inverting amplifier when the input signal is connected to.
A. Inverting terminal
B. Non inverting terminal
C. Earthened wire
D. Both a and b
5 Which one of the following has the largest wavelength.
A. x rays
B. Infrared rays
C. Visible light
D. Radio waves
6 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
7 During the alpha decay process
A. A neutron is emitted
B. a electron is emitted
C. A helium core is emitted
D. A proton core is emitted
8 On which factor cut off wavelength of X-rays coming from a Coolidge tube depends upon.
A. Target material
B. Accelerating voltage
C. Filament temperature
D. Separation between target and the filament
9 Usually in an operational amplifier the inputs used are of
A. Equal voltage and same polarity
B. Equal voltage and opposite polarity
C. Different voltage and same polarity
D. Different voltage and opposite polarity
10 In scattering experiment which force scatters alpha particle.
A. Nuclear force
B. Coulomb's force
C. Gravitational force
D. Centripetal force

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