Open Educational Resources
General Documents Technological Reforms in Agriculture Force Motion Universal Law of Gravitation Defects of Vision Mirage Twinkling of Stars Dispersion ...
Tag: Open Educational Resources
Technological Reforms in Agriculture – Study Material
It was mentioned in the previous pages that agriculture has been practised in India for thousands of years. Sustained uses ...
Force – Study Material
For many centuries, the problem of motion and its causes had puzzled scientists and philosophers. A ball on the ground, ...
Motion – Study Material
In everyday life, we see some objects at rest and others in motion. Birds fly, fish swim, blood flows through ...
Universal Law of Gravitation – Study Material
10.1.1 UNIVERSAL LAW OF GRAVITATION Every object in the universe attracts every other object with a force which is proportional ...
Defects of Vision – Study Material
Sometimes, the eye may gradually lose its power of accommodation. In such conditions, the person cannot see the objects distinctly ...
Mirage – Study Material
9.4.1 Total internal reflection in nature and its technological applications On hot summer days, the air near the ground becomes ...
Twinkling of Stars – Study Material
The twinkling of a star is due to atmospheric refraction of starlight. The starlight, on entering the earth’s atmosphere, undergoes ...
Dispersion of White Light – Study Material
You must have seen and appreciated the spectacular colours in a rainbow. How could the white light of the Sun ...
Food Crops in India – Study Material
A variety of food and non food crops are grown in different parts of the country depending upon the variations ...