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 special theory of relativity, time is	A. absolute quantity B. not absolute quantity C. constant quantity D. none of these
2	A photon is considered to have	A. Momentum B. Energy C. Wavelength D. All of the above
3	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
4	If you are moving at relativistic speed between two points that are a fixed distance apart, then the distance between the two points appers	A. larger B. shorter C. equal D. none of these
5	The existence of position was predicted by Dirace in	A. 1920 B. 1925 C. 1930 D. 1928
6	S.I. unit of planks constant is	A. J-s^-1 B. J.s C. J.s^-2 D. J.s²
7	Due to relative motion of observer and the frame of reference of events, time always:	A. Dilates itself B. Contracts itself C. Stretches itself D. Both (A) and (C)
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	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
10	The concept of direction is purely:	A. Absolute B. Relative C. Relative to stars always D. Relative to the sun always

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

S.I. unit of planks constant is

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

At the temperature, a body emits radiation which is principally

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

A photon is considered to have

Davision and Germer performed experiment to verify

Victor de-Brogile received the Nobel prize in physics in

The special theory of relativity is based on:

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

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

Photoelectric effect takes place with a photon of:

The special theory of relativity treats problems invoving

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

The Stephen-Boltzmann law for the black body radiation is given by

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

A black body is

Position was discovered by Carl Anderson in

0.1 kg mass will be equivalent to the energy

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

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

With the help of 50 K v electron microscope, a resolution of

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

When platinum wire is heated, it appears cherry red at

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

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

Newton's law of motion do not hold in

A particle having mass and charge equal to that of an electron is called:

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

Wien's constant is measured in:

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

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

Is this page helpful?

Share your comments & questions here

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