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

Which given quantity remains the same in isotones.

Question # 2

X-rays used for

Question # 3

The half life of a radioactive element depends upon.

Question # 4

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

Question # 5

The radius of second orbit of hydrogen atom is

Question # 6

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

Question # 7

Positron are produced during.

Question # 8

A logic circuit with one input and one output that inverts the input signal at the output is.

Question # 9

Which one of the following is a neutron absorber

Question # 10

Sub atomic paticles whihc does not experience strong nuclear force are.

Question # 11

The mass of proton is equal to.

Question # 12

An Alpha particle is the same as

Question # 13

The half life of uranium -238 is

Question # 14

the wavelength of continuous X-rays is inversely proportional to.

Question # 15

There are how many modes of operations of a BJT.

Question # 16

The energy in electron volts necessary to remove the most loosely bound electron from the neutral atom is known as.

Question # 17

The value of principal quantum number for an ionized atom is.

Question # 18

X-rays travel with

Question # 19

An operational amplifier have how many input terminals.

Question # 20

Deuterium is

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The unit Planck's constant is equivalent to that of.
A. Energy
B. Force
C. Velocity
D. Angular momentum
2 Compton scattering experiment seemed to indicate that radiation had
A. Wave nature
B. Particle nature
C. Wave particle nature
D. X-rays nature
3 A CE amplifier with by passed emitter resistor is an example of.
A. Current series feedback
B. Voltage sires feed back
C. Current shunt feedback
D. Voltage shunt feed back
4 The most convenient unit for energy at the atomic level is.
A. Joule
B. Watt second
C. Newton metre
D. Electron volt
5 If an object moves with velocity of light the apparent length of the object moving the direction of motion becomes.
A. Larger
B. Smaller
C. Zero
D. Infinity
6 The part of theory of relativity which deals with accelerated bodies is called.
A. special theory of relativity
B. General theory of relativity
C. Lorentz's theory of relativity
D. Galilean theory of relativity
7 In Compton's effect it was considered that X-rays consist of
A. Electrons
B. Holes
C. Neutrons
D. Protons
8 A factory buy 100 g of a radioactive chemical with a half life of 5 years which decays to a stable compound How much of the chemical will still be radioactive 10 years time.
A. 25 g
B. 50 g
C. 75 g
D. 100 g
9 If the base emitter junction is forward biased and base collector junction is reverse biased the BJT is in.
A. cut of mode
B. Amplification mode
C. Saturation mode
D. Inversion mode
10 Base current of a transistor is 1 mA and collector current is 99 mA What is emitter current.
A. 1 mA
B. 100 mA
C. 98 mA
D. 110 mA

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