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PHYSICS

Physics
For Gamma radiation, what stops its penetrating abilities?

Concrete
Steal
Lead
All of these

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Physics
An atom bomb based upon the principal of ________

Nuclear fission
Controlled chain reaction
None of these
Nuclear fussion

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Physics
The damage of the human body due to radiation (X-rays or grays etc,) is measured in :

Rems
Rads
Curie
Roentgen

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Physics
Radio activity is due to

Stable electronic configu-ration
Unstable nucleus
Stable electronic configu-ration
Stable nucleus

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Physics
What is the range of Strong Nuclear force?

Infinite
None
Very short Nuclear size
Very short Subnuclear size

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