Question

3. If the side mirror of a scooter is replaced by a plane mirror, will it cause any inconvenience to
the driver?
9. Rajesh for observing dispersion of light, used light from laser torch to fall on a prism. Will he
be able to observe a band of seven colours?
10. Vinita thought to make a solar cooker and she shared her idea with Ankita. Ankita felt very
excited that Vinita is using one of the renewable source of energy. Ankita suggested Vinita to
use concave mirror instead of plane mirror as reflector to get the maximum heat. Vinita liked
the idea of Ankita and thanked her.
(a) What is a solar cooker? What is its use?
(b) Why concave mirror is better than plane mirror for getting maximum heat?
(c) Can you name other such devices which are sources of energy and are eco-friendly.
Electricity
1. What is a circuit diagram?
2. How are the cells placed in the cell holder?
3. Name the device used to protect damages to the circuit due to excessive flow of current.​

Answer 1

Answer:

see below

Explanation:

Mirror used as a side mirror in a scooter is convex mirror. Inconveniences are

i) Less area visible on plane mirror as compared to convex mirror.

ii) Unable to see traffic behind the vehicle.

Answer 2

It was Nick who got inspiration to think of a Mother's Day gift. When he told this to Joe, he too was excited. They thought that their mother should feel important in the midst of her struggles.