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	According to the de-Brogile relation, an object of large mass and ordinary speed has	A. very small wavelength B. very large wavelength C. very small frequency D. all of these
2	If the radius of first orbit of hydrogen atom is 0.53° A the radius of second orbit will be	A. 2.120°A B. 0.212°A C. 21.2°A D. 0.14° a
3	The photoelectric effect, the maximum energy of photoelectrons depends on the	A. particular metal surface B. frequency of incident light C. both of them D. none of them
4	Converse of pair production is known as	A. Compton effect B. annihilation of matter C. photoelectric effect D. none of these
5	Max Planck received the Nobel Prize for his discovery of energy quants in:	A. 1718 AD B. 1918 AH C. 1818 AD D. 1918 AD
6	Strictly speaking, the earth is:	A. An accelerated frame of reference B. A non-inertial frame of reference C. An inertial frame of reference D. ^{A non-accelerated frame of reference}
7	Practically the quantity v/c is always:	A. less than one B. Equal to one C. Greater then one D. all of these
8	The special theory of relativity is based on the	A. one postulate B. two postulates C. three postulates D. four postulates
9	According to the special theory of relativity, time is	A. absolute quantity B. not absolute quantity C. constant quantity D. none of these
10	Momentum is a parameter associated with	A. wave motion B. particle motion C. neither wave nor particle motion D. none of these

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

0.1 kg mass will be equivalent to the energy

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

Intensity of light determines the:

When monochromatic light is allowed to fall on cathode, it begins to emit electrons, these electrons are called

Max Planck received the Nobel Prize for his discovery of energy quants in:

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

The energy of a photon is represented by

A non-inertial frame of reference is one, in which

Momentum is a parameter associated with

As compared to the distance measured by an observer on Earth, the distance from Earth to a star measured by an observer in a moving spaceship would seem:

Victor de-Brogile received the Nobel prize in physics in

There is no way to detect:

Photoelectrons are emitted when ultraviolet light falls on:

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

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

Max plank founded a mathematical model resulting in an equation that describes the shape of observed black body radiation curves exactly, in

In photoelectric effect the energy of ejected electrons depend on

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

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

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

S.I. unit of planks constant is

Albert Einstein got the Nobel prize in physics for his explanation of photoelectric effect in

The energy of the 4th orbit in hydrogen atom is

If a material object moves with the speed of light 'C' its mass becomes

The threshold frequency of sodium is 6 x 106MHz. The cut-off wavelength for this metal will be

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

When a platinum wire is heated, it appears dull red at about

According to the special theory of relativity, time is

The photoelectric effect, the maximum energy of photoelectrons depends on the

The photon of radio-waves has energy of about

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

The threshold frequency of sodium is 6 x 10⁶MHz. The cut-off wavelength for this metal will be