### Nuclei

Nuclei

**Physics**subject

**,**Chapter

**Nuclei**knowledge.

The ground state energy of Hydrogen atom is -13.6 eV. What is the potential energy of electron in this state?

Chadwick was awarded the Nobel prize in Physics in 1935 for his discovery of:

The half life of a radioactive decay is n times its mean life, n is equal to:

Rutherford is the unit of:

Alpha particle emitted from a radioactive material are:

According to Yukawa’s theory of nuclear forces, the origin of nuclear force between nucleons is due to the exchange of

An electron and a positron each having a mass equivalent to 0.53 MeV annihilate each other and produce a photon. The minimum energy of the photon is.

When the mass of a sample of a radioactive substance decreases, the mean life of the sample:

If radio active nuclei emits β-particle, then mass-number:

Nuclear force is:

Radius of 1st Bohr orbit is a_{0} (= 0.529 Å) What is the radius of 2nd Bohr orbit?

^{-8}

_{0}

_{0}

_{0}

The density of a nucleus is of the order of:

^{15}kg m

^{-3}

^{16}kg m

^{-3}

^{18}kg m

^{-3}

^{17}kg m

^{-3}

The wavelength of y-rays is of the order of:

^{-8}m

^{-5}m

^{-22}m

^{-11}m

The Bohr model of atom:

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## Try other Chapter

- Chapter 1: Electric Charges and Fields.
- Chapter 2: Electrostatic Potential and Capacitance.
- Chapter 3: Current Electricity.
- Chapter 4: Moving Charges and Magnetism.
- Chapter 5: Magnetism and Matter.
- Chapter 6: Electromagnetic Induction.
- Chapter 7: Alternating Current.
- Chapter 8: Electromagnetic Waves.
- Chapter 9: Ray Optics and Optical Instruments.
- Chapter 10: Wave Optics.
- Chapter 11: Dual Nature of Radiation and Matter.
- Chapter 12: Atoms.
- Chapter 14: Semiconductor Electronics.
- Chapter 15: Communication Systems.