Showing posts from February, 2022
Scattering of Light The path of a beam of light passing through a true solution is not visible. But it is visible through a colloidal solution due to sca…
Atmospheric Refraction If an object is observed through hot air above a fire or radiator, it shows random wavering or flickering. The hotter…
Dispersion of White Light by a Glass Prism When sunlight passes through a small hole, it gives a narrow beam of white light. Allow the light …
Refraction of Light through a Prism A triangular glass prism has two triangular bases and three rectangular lateral surfaces. These surfaces are inclin…
Defects of Vision and Their Correction Defects of vision (refractive defects) are caused due to gradual loss of power of accommodation. Mainl…
The Human Eye The eyeball is nearly spherical with a diameter of 2.3 cm. The eye is like a camera . It has the following main parts: …
ENVIRONMENTAL CONSEQUENCES Exploiting sources of energy disturbs the environment. Selection of an energy source depends on factors such as: …
ALTERNATIVE OR NON-CONVENTIONAL SOURCES OF ENERGY Solar Energy The Sun has been radiating an enormous amount of energy for 5 billion years and wi…
