Question

-2- Very short answer type question - 1X5=5
- Name the most important source of light for the earth.
- On what principle does a pinhole camera work?
-- Name a device which is used to 'open' or 'close' a circuit?
- Name a common device which produces electricity from chemicals stored inside it
E- What happens when a bar magnet is left to move freely?
Guctions, 176-6​

Answer 1

Answer:

1. The sun.
2. Rectilinear theory of light.
3. Switches.
4. Battery.
5. It attracts all magnetic substances towards it.

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