JEE Main · 2005 · 08 May 2005 · Offline · Hydrogen

Hydrogen bomb is based on the principle of

(A)Nuclear fission
(B)Natural radioactivity
(C)Nuclear fusion✓ Correct
(D)Artificial radioactivity

Answer: (C)

Solution

A hydrogen bomb is a thermonuclear device, so its energy comes from fusion rather than from splitting heavy nuclei. At the enormous temperatures and pressures involved, light nuclei such as the hydrogen isotopes deuterium and tritium fuse into heavier helium nuclei, and the tiny loss of mass appears as energy through

E = m c^{2}

, the very process that powers the Sun. Fission serves only as the trigger that creates the conditions for this fusion to take hold.

JEE Main · 2005 · 08 May 2005 · Offline · Single correct option

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