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

• 20 ms-1 A
• 10 ms-1 B
• 2 cms-1 C
• 2 ms-1 D

Compton effect proves.

• Wave nature of radiation A
• Wave nature of particle B
• Dual nature of particle C
• Particle nature of radiations D

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

• Energy A
• Power B
• Acceleration C
• Angular momentum D

When platinum is it becomes orange at.

• 500^oC A
• 900^oC B
• 1100^oC C
• 1300^oC D

The mass of an object will be doubled at speed.

• 2.6 x 10⁸ m/s A
• 1.6 x 10⁸ m/s B
• 2.6 x 10⁷ m/s C
• 3.6 x 10⁷ m/s D

The uncertainty principle was given by

• De-Broglie A
• Heisenberg B
• Einstein C
• Max Planck D

The quantity/factor h/m_oc has the dimensions of.

• Length A
• Time B
• Mass C
• Energy D

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

• sodium A
• Copper B
• Nicked C
• Cobalt D

Joule second is the unit of.

• Energy A
• Wein's constant B
• Planck's constant C
• Boyle's law D

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

• Electron ahve a wave nature A
• Electrons can be focused by an electric field B
• Electrons can be focused by a magnetic field C
• All of the above D

The stopping potential for a certain metal is 10 volts. Thus work function for the cathode is.

• 10 J A
• 1.6 X 10^-18 J B
• 1.6 X 10^-19 J C
• 1.6 X 10³⁰ J D

Anti particle of electron is

• Proton A
• Photon B
• Neutron C
• Positron D

• Wien's constant A
• Planck's constant B
• Davison constant C
• Lumber's constant D

Which one of the following paved the way for modern physics

• Newtonian mechanics A
• Theory of relativity B
• Quantum theory C
• All of above D

In Compton effect the photon behaves as a.

• Wave A
• Particle B
• Nucleon C
• Both a and b D

A positron is an anti particle of.

• Proton A
• Electron B
• Neutron C
• Photon D

Compton shift is maximum for scattering angle of photon

• 0^o A
• 90^o B
• 180^o C
• 45^o D