Home Physics Atomic and Nuclear Physics Nucleus, Nuclear Reaction What was the fissionable material used in bo…
Physics Atomic and Nuclear Physics Nucleus, Nuclear Reaction Single Correct MCQ
Published on: September 12, 2026

What was the fissionable material used in bomb dropped at Nagasaki (Japan) in the year 1945?

A
Uranium
B
Neptunium
C
Berkalium
D
Plutonium

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Text Solution

Verified by Experts
The correct answer is:
D
The bomb dropped on Nagasaki was known as 'Fat Man' and used plutonium-239 as its fissionable material. The choice of plutonium was due to its ability to sustain a rapid chain reaction necessary for a nuclear explosion.
Plutonium-239 is produced in nuclear reactors from uranium-238 and was less common than uranium-235, which was used in the bomb dropped on Hiroshima. Therefore, the correct answer is D.

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