Question # 1

In 1905, the special theory of relativity was proposed by

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Einstein

Bohr

Maxwell

De Broglie

Compton shift is maximum for scattering angle of photon

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0^o

90^o

180^o

45^o

If an object moves with speed of light, its mass will be.

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Zero

Maximum

Minimum

infinity

When platinum is it becomes orange at

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500^oC

900^oC

1100^oC

1300^oC

Platinum wire becomes yellow at a temperature of.

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900^oC

1300^oC

1600^oC

500^oC

The energy of photon is givne by

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mv2/2

hf

Va e

mac¹

By modern system of NAVSTAR, the speed any where on the earth can be determined to accuracy about.

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20 ms-1

10 ms-1

2 cms-1

2 ms-1

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

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JC

J/C

JS

J/S

Photodiode is used for wave nature of.

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Light

Thermal radiation

Radi waves

Sound waves

A perfect absorber must also be perfect

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Cavity

Sources of radiation

Radiator

None of these

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

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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

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

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