1. Two bulbs of 100 W, 120 V and 20 W, 120 V are connected in parallel across V source. Find current in each bulb. Which bulb will consume more energy? 2. How does the resistance of a wire change when:
(i) its length is tripled? (ii) its diameter is tripled?​

the answer is the last option

explanation:

because in order to know what the molecule is you need to know how many atoms of each element are in the molecule.

1.   what is light?

light is an electromagnetic wave visible to the human eye. 

2. what is a reflection?

the rebounding of a light ray when it hits a mirror.

3. what is the incident ray?

contacts the surface of an object.

4. what is the reflected ray?

bounces off a reflective surface.

5. what is the normal ray?

perpendicular to the surface of a mirror.

6. what is the angle of incidence?

an angle formed by the incident ray and the normal.

7. what is the angle of reflection?

an angle formed by the reflected ray and the normal.

8. what is refraction?

(bending.)

9. what is a converging lens?

bring together light rays that pass through.

10. what is a diverging lens?

spreads out light passing through.

11. focal point?

the real point where the refracted rays meet when the incident rays run parallel.

i copy pasted btw from an website..