Question # 1

The concept of direction is purely

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Relative

Absolute

Relative to the motion

None of these

Wave nature of light appears in

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Pair production

Compton effect

Photo electric

Interference

The physical quantity related to photon, that does not change in Compton scattering is.

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Energy

Speed

Frequency

Wavelength

Platinum wire becomes white at a temperature of.

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1600^oC

1300^oC

1100^oC

900^oC

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 minimum energy required for occurrence of pair production is:

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1.022eV

1.02keV

1.02Me.V

1.04MeV

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

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JC

J/C

JS

J/S

Compton's effect is associated with

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gamma rays

Beta rays

X rays

Positive rays

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

Albert Einstein got noble prize in:

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1926

1921

1918

1931

The energy of the photon of wavelength 500 nm is.

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3.10 eV

2.49 eV

1.77 eV

1.52 eV

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

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