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	Which one of the following physical quantities changes with relativistic speed	A. Length B. Mass C. Time D. All of the above
2	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
3	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
4	Photoelectrons are emitted when ultraviolet light falls on:	A. Casium B. Silver C. Potassium D. Any of these
5	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
6	The special theory of relativity is based on:	A. Four postulates B. Three postulates C. Two postulates D. One postulate
7	In process of annihilation of matter, the two photons produced move in opposite direction to converse	A. momentum B. charge C. energy D. mass
8	The ratio of energy E to the corresponding frequency (f) of the radiation (emitted or absorbed) is called:	A. Wien's constant B. Stefen's constnat C. Planck's constant D. Boltzmann's constant
9	Momentum is a parameter associated with	A. wave motion B. particle motion C. neither wave nor particle motion D. none of these
10	Compton derived an expression to find compton shift by applying to the process, the law of conservation of:	A. Energy only B. Momentum only C. Mass only D. Charge only

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

There is certain frequency below which no electrons are emitted from the metal surface, this frequency is known as

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

According to the special theory of relativity, time is

The speed of a pendulum is measured to be 3.0 s in the inertial reference frame of the pendulum. What is its period measured by an observer moving at a speed of 0.95 c with respect to the pendulum

When a position comes close to an electron they annihilate into photons such that

the symbol to be used in relativity problems denotes:

Newton's law of motion do not hold in

According to the electromagnetic wave theory of light, increasing the intensity of incident light should increase the

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

According to the special theory of relativity

The value of the Stephen's constant for black body radiations is given by

The energy of the 4th orbit in hydrogen atom is

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

Compton shift refers to:

The existence of position was predicted by Dirace in

When a platinum wire is heated, it appears yellow at

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

Position was discovered by Carl Anderson in

Photoelectrons are emitted when ultraviolet light falls on:

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

Current, voltage, resistance measuring circuit is connected with the galvanometer with the help of switch, known as

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

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

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

The value of threshold frequency for different metals is

When a platinum wire is heated, it appears orange red at

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

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

The analysis of the distribution of wavelengths of the radiation emitted from a hot body set the foundation of new mechanics, known as

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