In a certain pinhole camera, the screen is 10 cm from the pinhole. when the pinhole is placed 6 cm away from a tree ,a sharp imageof a tree 16 cm high if formed on the screen. find height of the tree

Height of the tree is 9.6 cm

Explanation:

We know that, Magnification of an image is written as follows.

Where,

As per given question,

Substitute the values in the above formula,

Height of the tree is 9.6 cm.

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete