Question

please answer my questions​

Answer 1

answers we need different clothes to our bodies against change in weather

Answer 2

Hello user !

Solution:-

1) Angle of Incidence is angle which inident ray makes with normal.

So , angle of Incidence = (90-40)

2) Angle of reflection is equal to the angle of Incidence (Laws of reflection)

= 50°

Hope it helps ❤ ❤