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

Radioactivity is the phenomenon associated with the.

Question # 2

Mosley's law establishes the X-rays fluorescence of target element with is.

Question # 3

Radioactive substances do not emit

Question # 4

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

Question # 5

Which one of the following gates in a a universal gate.

Question # 6

X-rays are absorbed maximum by

Question # 7

The neutral atoms of all isotopes of the same element contain the same numbers of.

Question # 8

In the experiment of photo electric effect the minimum frequency of photons at which electrons are emitted from a metal surface is called.

Question # 9

Why is a capacitor resistor combination used in oscillators in grid circuit.

Question # 10

Which of the following is deflected by an electric field.

Question # 11

Low frequency response of an amplifier is mainly limited by.

Question # 12

Transistor are made from

Question # 13

Negative feedback

Question # 14

The mass defect of Bohr's atomic model is

Question # 15

A transistor can be used as

Question # 16

Ashes from a campfire deep in a cave show carbon -14 activity of only one eighth the activity of fresh wood. How long ago was that campfire made.

Question # 17

At what speed the mass of a body will be doubled.

Question # 18

In a Nuclear reactor which material is often used as modeerator.

Question # 19

In a cloud chamber the Alpha particles leave

Question # 20

The converse of pair production is

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Radio carbon in the atmosphere is produced by the bombardment of.
A. Oxygen by high energy neutrons
B. Oxygen by high energy protons
C. Nitrogen by high energy protons
D. Nitrogen by high energy neutrons
2 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
3 Ashes from a campfire deep in a cave show carbon -14 activity of only one eighth the activity of fresh wood. How long ago was that campfire made.
A. 13590 years
B. 15190 years
C. 17190 years
D. 21190 years
4 A perfect back body
A. Is a perfect absorber of all radiations
B. Is a perfect reflector of all radiations
C. Is a perfect reflector of visible lights radiations
D. Is a brownish object
5 Specially designed solid state detector can be used to detect.
A. Alpha particles
B. Beta particles
C. Gama rays
D. X- rays
6 The maximum energy of emitted photoelectron is measured by
A. the largest potential difference they can traverse
B. The current they produce
C. The potential difference they produce
D. The speed with they emerge
7 At what speed the mass of a body will be doubled.
A. 0.67 C
B. 0.77 C
C. 0.87 C
D. 0.97 C
8 The half life of uranium -238 is
A. 1620 years
B. 4.5 x 109 years
C. 3-8 days
D. 23.5 minutes
9 As the mass number increases, the binding energy per nucleon in a nucleus
A. Increases
B. Decreases
C. Remain constant
D. Varies in a way that depends upon A
10 How much large is the proton mass than the electron mass.
A. 1536
B. 1636
C. 1736
D. 1836

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