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 of the following radiations will burn human skin

Question # 2

The phenomenon in which a photon of frequency 'f' is scattered by an electron and the scattered photon has frequency f <f is known as.

Question # 3

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

Question # 4

One gray is equal to.

Question # 5

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

Question # 6

Which one among these contacts in a transistor is non rectifying.

Question # 7

Which of the following is its own anti particle.

Question # 8

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

Question # 9

Which of the following are electromagnetic waves.

Question # 10

An oscillator is basically an amplifier with loop gain

Question # 11

Which Isotopes is use din radioactive dating.

Question # 12

One particle having zero mass and zero charge is.

Question # 13

The advantage of electron tube over a transistor is.

Question # 14

In electromagnetic spectrum X-rays are next to.

Question # 15

The half life of isotopes X is four days and its initial mass is 32 mg What mass of the isotope X will remain after twelve days.

Question # 16

If an object moves with velocity of light the apparent length of the object moving the direction of motion becomes.

Question # 17

A solid state detector is basically

Question # 18

A unijunction transistor

Question # 19

For an electron or position the rest mass energy is equal to.

Question # 20

Mean life of a radioactive sample is 100 s its half life will be

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 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
2 Which of the following quantities is discrete according to Bohr's hypothesis.
A. Momentum
B.
Potential energy
C. Angular velocity
D. Angular momentum
3 The energy delivered to the tissue per unit mass is called the absorbed dose of.
A. X rays
B. gama rays
C. Radiation
D. energy
4 A single quantum of electromagnetic radiation is termed as.
A. Compton
B. Photon
C. Hyperon
D. Meson
5 Negative feedback
A. Increases stability
B. Decreases stability
C. Produces oscillatory
D. Cannot occur
6 Which of the following are particle accelerators.
A. Cyclotrons
B. Synchrotrons
C. Linear accelerators
D. All of the above
7 Which configuration is used to connect high impedance source to a low impedance lead.
A. CE
B. CB
C. CC
D. BE
8 In de Brogile model electron orbit must form
A. Spectrum
B. Wave packets
C. Franhoffer lines
D. Clouds
9 The most readily fissionable isotope of uranium has atomic mass of
A. 234
B. 235
C. 236
D. 238
10 Half life of a radioactive elements 10 minutes If the initial cont. rate is 368 counts per minute for what time count rate reaches 32 counts per minute.
A. 20 minutes
B. 40 minutes
C. 80 minutes
D. 120 minutes

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