Study Material

Hello friends! I am proud to have achieved the position of class 10 topper, and I would like to share some tips that I believe will be helpful in preparing...

AIEEE now JEE Main will be conducted first time is very important entrance exam for those students who wish to pursue their career in engineering and architecture fields. Students who...

General Documents Technological Reforms in Agriculture Force Motion Universal Law of Gravitation Defects of Vision Mirage Twinkling of Stars Dispersion of White Light Food Crops in India Industrial Pollution in...

It was mentioned in the previous pages that agriculture has been practised in India for thousands of years. Sustained uses of land without compatible techno-institutional changes have hindered the pace...

For many centuries, the problem of motion and its causes had puzzled scientists and philosophers. A ball on the ground, when given a small hit, does not move forever. Such...

In everyday life, we see some objects at rest and others in motion. Birds fly, fish swim, blood flows through veins and arteries and cars move. Atoms, molecules, planets, stars...

10.1.1 UNIVERSAL LAW OF GRAVITATION Every object in the universe attracts every other object with a force which is proportional to the product of their masses and inversely proportional to...

Sometimes, the eye may gradually lose its power of accommodation. In such conditions, the person cannot see the objects distinctly and comfortably. The vision becomes blurred due to the refractive...

9.4.1 Total internal reflection in nature and its technological applications On hot summer days, the air near the ground becomes hotter than the air at higher levels. The refractive index...

The twinkling of a star is due to atmospheric refraction of starlight. The starlight, on entering the earth’s atmosphere, undergoes refraction continuously before it reaches the earth. The atmospheric refraction...