## Question

### Solution

Correct option is

7.68 MeV

The carbon nucleus has 6 protons and 6 neutrons and 6 orbital electrons revolving around the nucleus.   This is the sum of the masses of the nucleons.   This is the mass of the carbon nucleus. Therefore, the mass-defect is  Its energy equivalent is  = 7.68 MeV.

#### SIMILAR QUESTIONS

Q1

Calculate the energy in joule equivalent to the mass of one proton. The mass of proton is 1.00728 u. Express the energy in kilowatt-hour also.

Q2

An electron-positron pair is produced by the materialization of a gamma-ray photon of 2.26 MeV. How much kinetic energy is imparted to each of the charged particle? The rest mass of elector is and the speed of light is Take .

Q3

An electron and its antiparticle are annihilated after collision. How much energy will be obtained? What will be the wavelength of the emitted radiation (energy)? (Mass of electron , speed of light and Planck’s constant )

Q4

A 1-MeV positron collides head-on with a 1-MeV electron and they are annihilated, producing -rays. Compute total energy of the resulting -rays and their wavelength.Given : rest mass of electron or positron = 0.000549 u, Q5

A neutron breaks into a photon , an electron and antineutrino . Calculate the energy released in this process in MeVGiven : mass of electron , mass of proton , mass of neutron .

Q6

A neutron is absorbed by a nucleus with subsequent emission of an -particle. Write the corresponding nuclear reaction and calculate the energy released in the reaction.

Given, Q7

Calculate the binding energy of an -particle in MeV. The masses of proton, neutron and -particle are 1.00728, 1.00867 and 4.00151 urespectively.

Q8

Calculate the binding energy of a deuteron in MeV.Given : mass of neutron = 1.008665 u, mass of hydrogen atom , mass of deuterium atoms Q9

Calculate the binding energy of a nitrogen nucleus in MeVGiven : mass of hydrogen atom = 1.00783 u, mass of

neutron = 1.00867 u and mass of nitrogen atom . Take 1 u = 931.5 MeV/c2.

Q10

Calculate the binding energy per nucleon of the nuclei of Given :mass of hydrogen atom = 1.007825 u, mass of neutron = 1.008665 u, mass of atom = 55.934939 u, mass of atom = 208.980388u and . Which nucleus is more stable?