Hydrogen bomb is based on the principle of

Solution :
Such reaction in which two lighter nucleus are fused together to form a heavier nuclei is called nuclear fusion.
NOTE : In hydrogen bomb, a mixture of deuterium oxide $$\left( {{H_2}O} \right)$$  and tritium Oxide $$\left( {{T_2}O} \right)$$  is enclosed in a space surrounding an ordinary atomic bomb. The temperature produced by the atomic bomb initiates the fusion reaction between $$_1{H^3}$$ and $$_1{H^2}$$ releasing a large amount of energy.