24 march

1. Proton,neutron, electron are fundamental particle

2. Energy of a photon is linearly dependent on its frequency.

3. Impact parameter is inversely proportional to kinetic energy of alpha particle

How many correct?

• 1

• 2

• 3

• None

When two atoms collided, energy released is 13eV. The collision is

• Elastic

• Inelastic

• 50% possibly

• None

Effeciency of photoelectric effect is

• 10³

• 10⁵

• 10⁷

• None

1. Y intercept of graph of stopping potential vs frequency is universal constant

2. Nuclear force is spin dependent

3. When object breaks due to internal force, de broglie wavelength increases

How many correct?

• 1

• 2

• 3

• None

1. Speed of matter wave can be infinity

2. De broglie hypothesis is only applicable to relativistic particles

3. In interaction of charges, no. of charged particles remain constant.

How many correct?

• 1

• 2

• 3

• None

1. Neutron is neutral

2. Neutron is made up of charged particle

3. Electron is made up of quarks

4. There is n number of de broglie wave in nth orbit

5. Bohr considered only particle nature in his theory

How many correct?

• 1

• 2

• 3

• 4

• All

1. Neutron is heavier than proton

2. There is no explanation given by bohr behind his 2nd postulate

3. Photoelectric effect discovered by einstein

How many correct??

• 1

• 2

• 3

• None