ECAT Pre Computer Science Chapter 19 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 19 Dawn of Modern Physics

Try The MCQ's Test For ECAT Physics Chapter 19 Dawn of Modern Physics

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

ECAT Physics Chapter 19 Dawn of Modern Physics

00:00
Question # 1

The mass of an object will be doubled at speed

Question # 2

According to the special theory of relativity, time is

Question # 3

Wien's constant is measured in:

Question # 4

If the radius of first orbit of hydrogen atom is 0.53° A the radius of second orbit will be

Question # 5

The location and speed anywhere on earth can now be determined using relativistic effects by NAVISTAR to an accuracy of

Question # 6

Photoelectric effect takes place with a photon of:

Question # 7

According to Einstein, with the great increase in the speed of the body, the relativistic mass of the body

Question # 8

The stopping voltage for a certain metal is 100 volts, then the work function for the cathode plate is

Question # 9

In order to produce pair production, a photon must have a energy

Question # 10

Davision and Germer performed experiment to verify

Question # 11

In process of annihilation of matter, the two photons produced move in opposite direction to converse

Question # 12

The value of the plank's constant 'h' is given by

Question # 13

Compton derived an expression to find compton shift by applying to the process, the law of conservation of:

Question # 14

Victor de-Brogile received the Nobel prize in physics in

Question # 15

When the atomic particle are moving with velocities approaching that of light:

Submit

Prepare Complete Set Wise ECAT Physics Chapter 19 Dawn of Modern Physics MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Physics Chapter 19 Dawn of Modern Physics MCQ`s Test

  • A
    Anayat Ali 03 - Apr - 2024 00 Min 25 Sec 60/60
  • H
    HAMZA Shah 21 - Sep - 2021 00 Min 42 Sec 60/60
  • U
    Umer Usman 10 - Mar - 2024 01 Min 08 Sec 60/60
  • S
    Sanja Account 28 - Jun - 2026 02 Min 38 Sec 56/60
  • S
    Sana Hashim 23 - May - 2022 02 Min 21 Sec 55/60
  • T
    Tayyaba 28 - Feb - 2018 04 Min 27 Sec 55/60
  • A
    Abdullah Baloch 11 - Aug - 2024 04 Min 52 Sec 55/60
  • R
    Rabbia Munir 06 - Mar - 2024 02 Min 16 Sec 50/60
  • M
    MusiCore 15 - Mar - 2023 02 Min 27 Sec 50/60
  • M
    Muqadas Zahra 14 - Apr - 2022 02 Min 34 Sec 45/60
  • Z
    Zia Ullah Chahal 08 - Mar - 2024 01 Min 39 Sec 40/60
  • B
    Benjamin Joseph 01 - Mar - 2023 02 Min 51 Sec 40/60
  • A
    arbeel ejaz 09 - Mar - 2023 04 Min 07 Sec 40/60
  • F
    Farhan 07 - Jan - 2019 05 Min 18 Sec 40/60
  • N
    nageena safdar 08 - Jul - 2024 09 Min 20 Sec 40/60

ECAT Physics Chapter 19 Important MCQ's

Sr.# Question Answer
1 Compton shift refers to:
A. Photon
B. Meson
C. Proton
D. Positron
2 The emission of electrons from a metal surface when exposed to light of suitable frequency is called the
A. pair production
B. Compton effect
C. photoelectric effect
D. relativity
3 Pair production is the phenomenon in which
A. matter is converted into energy
B. energy is converted into matter
C. light is converted into electrical energy
D. electrical energy is converted into light
4 Converse of pair production is known as
A. Compton effect
B. annihilation of matter
C. photoelectric effect
D. none of these
5 As the light shines on the metal surface, the electrons are ejected
A. slowly
B. instantaneously
C. either of these
D. none of these
6 When a platinum wire is heated, it appears dull red at about
A. 500°C
B. 900°C
C. 1100°C
D. 1300°C
7 The photon of radio-waves has energy of about
A. 1 Me V
B. 1 Ke v
C. 10-10e v
D. 1010e v
8 According to the special theory of relativity, time is
A. absolute quantity
B. not absolute quantity
C. constant quantity
D. none of these
9 Wave nature of particle was proposed by
A. Einstein
B. Plank
C. De-Brogile
D. Max well
10 Wien's constant is measured in:
A. Metre per kelviin
B. Metre kelvin
C. Kelvin per meter
D. Joules

Test Questions