Question

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Answer 1

Answer:

III .

1) The bottom of the cooking utensils are made from good conductors of heat.

2) A resistor decreases current in an electric circuit.

3) Heat is transfered in liquids through convection.

4) An electromagnet attract a piece of iron.

5) The graph of a uniform motion is a straight line.

IV .

2a) Convex mirror

b) Concave mirror

3) Real image :

• It is formed when rays converge.

• It can be obtained on a screen.

Virtual image :

• A virtual image occurs where rays only appear to diverge.

• It cannot be obtained on a screen.

4) An object is said to be in motion when it changes its

position relative to a reference point.