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

Which BJT configurations used for signal inversion.

Question # 2

Deuterium is

Question # 3

The part of theory of relativity which deals with accelerated bodies is called.

Question # 4

X-rays are not used in RADARs because

Question # 5

The most familiar example of radioactive dating is.

Question # 6

The binding energy per nucleon for uranium is about.

Question # 7

The energy delivered to the tissue per unit mass is called the absorbed dose of.

Question # 8

When a helium atom loses an electron it becomes.

Question # 9

The input resistance of a JFET is of the order of.

Question # 10

In annitilation of matter, positron and electron pair disappears into two

Question # 11

48 days after the receipt the amount of iodine -131 left behind is only.

Question # 12

Beta decay may occur by

Question # 13

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

Question # 14

Lissajou's figures are used in a Cathode Ray Oscilloscope while measuring.

Question # 15

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.

Question # 16

Which of the following properties is not exhibited by X-rays.

Question # 17

In de Brogile model electron orbit must form

Question # 18

Photocells are used for

Question # 19

In n-p-n transistor the current flows in the direction from

Question # 20

The tunnel effect makes possible

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The unit of Rydberg constant R is
A. m
B. m3
C. m-1
D. m-2
2 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
3 Which quantity remains fixed in isobars.
A. Mass number
B. Atomic number
C. Number of neutrons
D. Number of protons
4 There are how many types of forces or interactions.
A. Two
B. Three
C. Four
D. Five
5 A slow neutron can cause fission in
A. Uranium -238
B. Uranium-235
C. Hydrogen-1
D. Thorium -232
6 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
7 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
8 For the normal operation of transistor the emitter base junction is always.
A. Zero biased
B. Reverse biased
C. Forward bised
D. Both a and b
9 The total energy of an electron in an orbit around the nucleus is.
A. Zero
B. Unity
C. Infinity
D. Negative
10 The process of pair production will take place if the energy of photon is greater than.
A. 0.21 MeV
B. 0.51 MeV
C. 1.51 MeV
D. 1.21 MeV

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