Question

When a candle is kept under a spiral that is in the form of a snake, what will we observe?

• A. Spiral rotates in anti-clockwise direction
• B. Spiral bounces up and down
• C. Spiral does not show any change
• D. Spiral rotates in clockwise direction

Answer 1

The correct option is D Spiral rotates in clockwise direction

Due to the burning candle, air around the flame will be heated and it will become lighter and move upward.
Whenever the hot air moves upwards, the spiral will move in a clockwise direction.

Clockwise direction is the same direction as a clock's hands: it moves from the top to the right, then down and then to the left, and back up to the top.