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 low energy photon interact with a metal,which of the following effect is likely to be taken place	A. pair production B. photoelectric C. Compton effect D. None of these
2	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}
3	When a platinum wire is heated, it appears white at	A. 1600°C B. 900°C C. 1100°C D. 1300°C
4	Which one of the following physical quantities changes with relativistic speed	A. Length B. Mass C. Time D. All of the above
5	With the help of 50 K v electron microscope, a resolution of	A. 0.5 to 1 m to possible B. 1 m to 10 m is possible C. 0.5 to 1 nm is possible D. 1 to 10 nm is possible
6	The Nobel Prize on the explanation of photoelectric effect was awarded to:	A. Max. Planck B. Maxwell C. Bohr D. Rutherford
7	A high temperature, the proportion of shorter wavelengths radiation, emitted by the body	A. decreases B. first increases then decreases C. increases D. any one of them
8	Compton was awarded Nobel prize in physics in	A. 1921 B. 1923 C. 1925 D. 1927
9	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	A. 1.66 m B. 1.0 m C. 0.66 m D. 2.66 m
10	When a platinum wire is heated, it appears orange red at	A. 500°C B. 900°C C. 1100°C D. 1300°C

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

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

Electromagnetic radiation or photons interact with matter in

the symbol to be used in relativity problems denotes:

Pair production is the phenomenon in which

When a platinum wire is heated, it appears white at

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

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

The mass of an object will be doubled at speed

At the temperature, a body emits radiation which is principally

The special theory of relativity treats problems invoving

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

Electromagnetic -radiation means:

When the atomic particle are moving with velocities approaching that of light:

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

Converse of pair production is known as

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

The emission of electrons from a metal surface when exposed to light of suitable frequency is called the

In photoelectric effect the energy of ejected electrons depend on

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

The energy of photon 'E' is proported to

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

An inertial frame is that frame in which

Intensity of light determines the:

Momentum is a parameter associated with

Which one of the following physical quantities changes with relativistic speed

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

Wien's constant is measured in:

Photoelectrons are emitted when ultraviolet light falls on:

Position was discovered by Carl Anderson in

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

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