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PHYSICS

Physics
For Gamma radiation, what stops its penetrating abilities?

Steal
All of these
Concrete
Lead

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Physics
An atom bomb based upon the principal of ________

Nuclear fussion
Nuclear fission
Controlled chain reaction
None of these

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

Rems
Curie
Roentgen
Rads

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Physics
Radio activity is due to

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

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Physics
What is the range of Strong Nuclear force?

Infinite
None
Very short Subnuclear size
Very short Nuclear size

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