When you shout in front of a hill, your own shout is repeated. Explain.

How can you make your own stethoscope ?

How do you prepare your own indicator using beetroot? Explain.

If you are standing in front of a mirror and observing your own image what is the relation between the distance of the object and the image from the mirrorr?

If you are standing in front of a mirror and observing your own image what is the relation between the distance of the object and the image from the mirrorr?