ECAT Pre Engineering Physics Chapter 19 MCQ Test With Answer

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

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

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

Physics ECAT Pre Engineering Chapter 19 Dawn of Modern Physics

00:00
Question # 1

The idea of quantization of energy was proposed by:

Question # 2

Photoelectric effect takes place with a photon of:

Question # 3

When a high energy photon interact with a metal, which of the following effect is most likely to be taken place

Question # 4

de-Broglies hypthesis was experimentally verified by

Question # 5

According to the special theory of relativity, time is

Question # 6

The special theory of relativity is based on:

Question # 7

From the theory of relativity, momentum p of the photon is related to energy as

Question # 8

Max plank received the Nobel Prize in physics for his discovery of energy quanta in

Question # 9

Converse of pair production is known as

Question # 10

According to the de-Brogile relation, an object of large mass and ordinary speed has

Question # 11

As the light shines on the metal surface, the electrons are ejected

Question # 12

If A represents linear momentum and c, the velocity of light, then unit of pc in international system of units is:

Question # 13

0.1 kg mass will be equivalent to the energy

Question # 14

A bar 1.0 m in length and located along x-axix moves with a speed of 0.75 c with respect to a stationary observer. The length of the bar as measured by the stationary observer is

Question # 15

The ratio of energy E to the corresponding frequency (f) of the radiation (emitted or absorbed) is called:

Submit

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


Topic Test

00:00
Submit

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

  • F
    Farzand Shah Farzand Shah 01 - Jun - 2024 01 Min 03 Sec 60/60
  • D
    David Navid 28 - Mar - 2024 02 Min 29 Sec 60/60
  • M
    Maryam afzal Maryam afzal 25 - May - 2024 09 Min 18 Sec 60/60
  • A
    Arian Ahmed 09 - Mar - 2024 00 Min 27 Sec 55/60
  • C
    Chhabibullah1492 Habib 06 - Mar - 2024 05 Min 29 Sec 55/60
  • H
    Huzaifa Asim 26 - May - 2024 09 Min 46 Sec 55/60
  • S
    suzi 11 - Feb - 2026 00 Min 43 Sec 52/60
  • B
    Bilal Javed 02 - Jun - 2024 03 Min 49 Sec 50/60
  • A
    Abdullah Zubair 08 - Jan - 2025 04 Min 17 Sec 50/60
  • M
    Muhammad Sufyan 01 - Jun - 2024 00 Min 08 Sec 45/60
  • M
    Maida Naveed 24 - May - 2024 03 Min 14 Sec 45/60
  • U
    umaima mubashar 31 - May - 2024 06 Min 17 Sec 45/60
  • F
    Fiza Saleem 03 - Dec - 2024 09 Min 36 Sec 45/60
  • T
    Tamshi Sohail 02 - May - 2024 03 Min 48 Sec 40/60
  • R
    rubina kousar 01 - Jun - 2024 04 Min 22 Sec 40/60

ECAT Physics Chapter 19 Important MCQ's

Sr.# Question Answer
1 Compton studied the scattering of x-rays by loosely bound electrons from:
A. NaCl crystal
B. Graphite crystal
C. Zirconia
D. Copper crystal
2 Current, voltage, resistance measuring circuit is connected with the galvanometer with the help of switch, known as
A. ON switch
B. off switch
C. function switch
D. none of these
3 According to the special theory of relativity
A. mass and energy are same entities
B. mass and energy are same entities but interconverible
C. mass and energy are different entities but interconverible
D. mass and energy are different entities but non-interconveritble
4 The inside cavity of the black body is
A. painted white
B. painted silver
C. blackened with soot
D. painted red
5 When a high energy photon interact with a metal, which of the following effect is most likely to be taken place
A. pair production
B. photoelectric effect
C. Compton effect
D. None of these
6 Compton was awarded Nobel prize in physics in
A. 1921
B. 1923
C. 1925
D. 1927
7 When the atomic particle are moving with velocities approaching that of light:
A. Newton's laws become valid
B. Relativistic effects become prominent
C. Botha(A) and (B) are valid
D. Neither (A)nor (B)
8 In photoelectric effect the energy of ejected electrons depend on
A. The frequency
B. The intensity
C. Both frequency and intensity
D. None of these
9 The value of threshold frequency for different metals is
A. different
B. same
C. may be different or may be same
D. none of these
10 According to the special theory of relativity, time is
A. absolute quantity
B. not absolute quantity
C. constant quantity
D. none of these

Test Questions

Is this page helpful?