If two place on the ground that located at 2° north and 10°south are shown 6cm part on a map. I. find the linear scale of a map
ii. find areal scale of map.

Simple astronomical telescope the objective lens has a focal length of 75 cm and that of a piece of 5cm of the lenses are 18 cm apart when will be final image of a distant object before

What is unusual about the iraq mountains ,in spite of their old age?

Which jewish festival was celebrated every month?