Question

Assertion: In a nuclear process mass gets converted into energy.
Reason: According to Einstein’s mass energy equivalence relation, mass m is equivalent to energy E, given by the relation ${\text{E = m}}{{\text{c}}^2}$ where c is the speed of light in vacuum.
A) If both assertion and reason are true and reason is the correct explanation of assertion
B) If both assertion and reason are true and reason is not the correct explanation of assertion
C) If assertion is true but reason is false
D) If both assertion and reason are false

Answer 1

Hint:
1. Einstein’s equation sets the relation between mass and energy transfer.
2. Conservation of energy discusses that energy can neither be created nor be destroyed.
3. Energy can be transformed from one form to another form in nature.

Complete step by step solution:
In the nuclear process, the mass of the mass gets converted into energy, and the same according to Einstein’s theory the equation describes the relationship between the mass and the energy.
Einstein’s equation is mainly used in a nuclear reaction.

As both assertion and reason talk about the change of mass into energy, therefore, the reason is the correct explanation of the assertion.

Both fusion and fission reactions have a destructive phenomenon which is the result of Einstein’s equation. The radioactivity of various elements that result in the production of x rays, gamma rays also according to Einstein’s equation.

Nuclear fusion is defined as a reaction in which two or more atomic nuclei are combined together to form one or more different atomic nuclei and subatomic particles (neutrons or protons). Nuclear fusion produces large amounts of energy during its reaction. The fission is a process which generates gamma photons and releases a very large amount of energy even by the energetic standards of radioactive decay.

Hence the correct option is \[\left( A \right)\].

Note:
1. Einstein’s equation refers to the invariant mass.
2. When the mass increases the energy also gradually increases.
3. Energy is measured in a Joule unit.
4. Here the energy is equal to the kinetic energy of the particle as the mass moves with the velocity of light.