For the following questions answer them individually
S. Somanath, an Indian aerospace engineer and rocket technologist, is the present director of:
An object is placed 30 cm before a concave mirror of focal length of 20 cm to get a real
image. What will be the distance of the image from the mirror?
The mean of three numbers is 15. The range of this data set is 8 while the difference
between the two smallest numbers is 1. The greatest of the three numbers is:
A certain house hold has consumed 320 units of energy during a month. How much energy is this in joules?
