speed of uv rays

(c) Cathode rays get deflected in the magnetic field. Figure (c) above shows a beam of cathode rays being deflected by the magnetic field. By applying 'Flemings left hand rule' we can also prove that they are negatively charged particles. Cathode rays travel with a gre..

In a evacuated glass chamber a filament and a metallic target are fixed. The filament is made to emit electrons due to thermionic emission by heating it electrically. The target kept in front of the filament is given a higher potential using a d.c power supply. So the electrons are attracted by the..

(i) g -rays are not deflected by electric and magnetic fields and this shows that they do not have any charge. (ii) The rest mass of g -ray photon is zero. (iii) The g -rays travel with the speed of light. (iv) g -rays have a very large penetra..

The stratosphere of the atmosphere has ozone (O 3 ). Ozone is known to absorb the Ultraviolet (UV) rays present in the sun's radiation. The UV rays are believed to cause skin cancer and mutations. Thus, the ozone protects us from the harmful effects of the ..

These are water filters very popularly used in homes and hotels. This filter operates with the help of electricity. The device uses a porcelain filter, charcoal and UV rays to purify the wate..

The different types of electromagnetic radiations in the increasing order of wavelengths are, gamma rays ( g ), X-rays, ultra-violet rays (U.V.), visible radiation, infrared radiation (IR), microwaves and radio wave..

A ray of light refracts or deviates from its original path as it passes from one optical medium to another because the speed of light change..

Also called as freons, they belong to a group called chlorofluorocarbons (CFC). They are used as propellant in aerosols or as refrigerants in domestic refrigerators, deep freezers, air conditioners. CFM are not disintegrated in air, but rise to troposphere. There they are dissociated due to ultra v..

Above the troposphere is the stratosphere. This zone is rich in ozone. Hence, it is also called ozonosphere. In ozonosphere, oxygen in the presence of sunlight converts to ozone by photochemical dissolution. The ozonosphere completely absorbs short wave solar radiations, such as ultraviolet (..

Wind Energy - Wind energy is one of the first sources of energy known to man. The sun's rays are stronger nearer the equator than in the polar region. This heats the air in equatorial region and warm lighter air rises while cooler polar air moves in to replace it. This movement of air res..