Question

1. A car is fitted with a convex side-view mirror of focal length
20 cm. A second car 2.8 m behind the first car is overtaking
the first car at a relative speed of 15 m/s. The speed of the
image of the second car as seen in the mirror of the first one
is :
(a)
m's
(b) 10m's
15
(c) 15 m's
(d)
ms
10​

Answer 1

Explanation:

The growing size of the human population is a cause of concern for all people. The rate of birth and death in a given population will determine its size. Reproduction is the process by which organisms increase their population.