Question # 1

The number of electrons emitted depends upon

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Colour of target surface

Shape of surface

Frequency of incident light

Intensity of incident light

De-Broglie waves are associated with

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Moving charged particles only

Moving neutral particles only

All moving particles

All parties whether in motion or at rest

Compton's effect is associated with

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gamma rays

Beta rays

X rays

Positive rays

Compton shift is maximum for scattering angle of photon

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0^o

90^o

180^o

45^o

The existence of positron in 1928 was predicted by

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Anderson

Dirac

Chadwick

Plank

The maximum kinetic energy of emitted photo electrons depends upon.

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The intensity of incident light

Frequency of the incident light

Metal surface

Both frequency of incident light and metal surface.

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

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7.20 nm

9.02

15.7 nm

17.3 nm

When platinum is it becomes orange at.

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500^oC

900^oC

1100^oC

1300^oC

Wave nature of light appears in

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Pair production

Compton effect

Photo electric

Interference

Internal frame is a frame is which

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1st law holds

2nd law holds

3rd law holds

Kelvin's law holds

Albert Einstein got noble prize in:

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1926

1921

1918

1931

The position has charge which is in magnitude equal to the charge on

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Electron

Proton

β particle

All

The most refined form of matter is:

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Smoke

Light

Ice

Fog

Compton effect proves.

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Wave nature of radiation

Wave nature of particle

Dual nature of particle

Particle nature of radiations

The materialization of energy take place in the process of.

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Photo electric effect

Compton Effect

Pair production

Annihilationof matter

Potassium Cathodes in photocell emit electrons for a light.

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Visible

Infra red

Ultra violet

X rays

In an nihilation emitted photons moves in opposite directions to conserve.

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Mass

Charge

Energy

Momentum

The unit of Plank's constant 'h' is.

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JC

J/C

JS

J/S

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

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