Question # 1

The special theory of relativity based on.

Choose an answer

One postulate

Two postulates

Three postulates

Four postulates

The dimensions of Plank's constant is same as that of.

Choose an answer

Energy

Power

Acceleration

Angular momentum

A positron is an anti particle of.

Choose an answer

Proton

Electron

Neutron

Photon

Pair production occurs only when energy of photon is at least equal in:

Choose an answer

1.02keV

1.02 eV

1.02 MeV

1.02 GeV

The existence of positron in 1928 was predicted by

Choose an answer

Anderson

Dirac

Chadwick

Plank

The value of Stefan is constant is:

Choose an answer

4.57 x 10^-8 m²k²

5.67 x10^-8 wm^-2k^-4

6.67x 10^-11 wm²k⁴

7.45 x 10^-9 m² wk³

An electron miroscope emplys which to one of the following particles?

Choose an answer

Electron ahve a wave nature

Electrons can be focused by an electric field

Electrons can be focused by a magnetic field

All of the above

Photo electrons are emitted y using visible light when the metal is.

Choose an answer

sodium

Copper

Nicked

Cobalt

Joule second is the unit of.

Choose an answer

Energy

Wein's constant

Planck's constant

Boyle's law

The energy of photon is givne by

Choose an answer

mv2/2

hf

Va e

mac¹

Compton effect proves.

Choose an answer

Wave nature of radiation

Wave nature of particle

Dual nature of particle

Particle nature of radiations

Albert Einstein got noble prize in:

Choose an answer

1926

1921

1918

1931

Application of wave like nature of particle is

Choose an answer

Photodiode

Optical microscope

Electron microscope

Compound microscope

The wavelength associated with the protons moving at speed of 40 m/s is.

Choose an answer

7.20 nm

9.02

15.7 nm

17.3 nm

In Compton effect the photon behaves as a.

Choose an answer

Wave

Particle

Nucleon

Both a and b

The most refined form of matter is:

Choose an answer

Smoke

Light

Ice

Fog

The mass of an object will be doubled at speed.

Choose an answer

2.6 x 10⁸ m/s

1.6 x 10⁸m/s

2.6 x 10⁷m/s

3.6 x 10⁷ m/s

More Classes

Other Links

Physics FSC Part 2 Chapter 19 Online MCQ's Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer