June 2012 Flashcards by Jessica D

Q

How to find refractive index?

A

Repeat.
Vary i to obtain more values.
plot graph of sin i against sin r.

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Q

Why do beta and alpha have different penetrating powers?

A

Alpha particles have less penetrating powers.
Alphas have more charge.
Alphas cause more ionisation.
Alphas have more mass.
Force on alpha particles is larger.

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Q

What are magnetic field lines?

A

Lines that show direction of magnetic field.

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