ECAT Pre General Science Chapter 19 online mcq test with answers for Physics chapter 19 (Dawn of Modern Physics)

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

A

Asghar Ali 03 - Mar - 2021 10 Min 50 Sec 100/120
S

shamsuddin 19 - Aug - 2021 10 Min 50 Sec 75/120
K

khadim Hussain 03 - Mar - 2021 10 Min 50 Sec 75/120
A

Ali ahmad 19 - Jul - 2018 09 Min 44 Sec 70/120
A

Aarij 08 - Dec - 2024 02 Min 25 Sec 65/120
W

Waleed Ahmed 26 - Feb - 2023 10 Min 00 Sec 65/120
Z

Ziyad Rehman Sheikh 16 - Nov - 2022 07 Min 21 Sec 40/120
M

maha 01 - Mar - 2023 04 Min 24 Sec 35/120

ECAT Physics Chapter 19 Important MCQ's

Sr.#	Question	Answer
1	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
2	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
3	When a platinum wire is heated, it appears dull red at about	A. 500°C B. 900°C C. 1100°C D. 1300°C
4	The energy of the 4th orbit in hydrogen atom is	A. 2.5 ev B. - 3.5 ev C. -0.85 ev D. -13.6 ev
5	At the temperature, a body emits radiation which is principally	A. of long wavelengths in the visible region B. of long wavelengths in the invisible infrared region C. of short wavelength in invisible ultraviolet region D. none of these
6	G.P. Thomson observer experimentally that electrons and neutrons possess	A. particle-like properties B. wave-like properties C. neither particle nor wave like properties D. none of these
7	0.1 kg mass will be equivalent to the energy	A. 9 x 10¹⁵J B. 5 x 10⁸J C. 6 x 10¹⁶J D. 9 x 10^-16J
8	Wien's constant is measured in:	A. Metre per kelviin B. Metre kelvin C. Kelvin per meter D. Joules
9	The value of the plank's constant 'h' is given by	A. 1.6 x 10^-19J B. 1.67 x 10^-27Kg C. 6.63 x 10³⁴Js D. 6.63 x 10^-34Js
10	Photocell is a device which converts	A. chemical energy into electrical energy B. electrical energy into light energy C. heat energy into electrical energy D. light energy into electrical energy

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

ECAT Pre General Science Physics Chapter 19 MCQ Test With Answer

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

ECAT Pre General Science Physics Chapter 19 Dawn of Modern Physics

Strictly speaking, the earth is:

If you are moving at relativistic speed between two points that are a fixed distance apart, then the distance between the two points appers

According to the special theory of relativity, a moving clock

A high temperature, the proportion of shorter wavelengths radiation, emitted by the body

Photoelectrons are emitted when ultraviolet light falls on:

Photoelectric effect takes place with a photon of:

Wave nature of particle was proposed by

The way through which electromagnetic radiations or photons interact with matter depends upon their:

An inertial frame is that frame in which

Due to relative motion of observer and the frame of reference of events, time always:

The general theory of relativity treats problems involving

Davision and Germer performed experiment to verify

The Nobel Prize on the explanation of photoelectric effect was awarded to:

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

Converse of pair production is known as

Wien's constant is measured in:

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

The year when A.H. compton was awarded Nobel Prize is:

The special theory of relatively treats the problems involving:

The nature of radiations emitted by a hot body depends upon its:

The existence of position was predicted by Dirace in

Photocell is a device which converts

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

There is no way to detect:

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

Position and momentum of a particle cannot both be measured simultaneously with perfect accuracy. This is the statement of

Which of the following phenomenon proves the particle nature of light

The mass of an object will be doubled at speed

When platinum wire is heated, then at the temperature of 500 oC, it becomes:

The length contraction happens only

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

Set 1

Set 2

Set 3

Set 4

Set 5

Topic Test

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

ECAT Physics Chapter 19 Important MCQ's

Test Questions

Share your comments & questions here

When platinum wire is heated, then at the temperature of 500 ^oC, it becomes: