general science index

Thus we can define refractive index in terms of the speed of light in the two media. The refractive index of glass with respect to air is given by the relation. In general, if a ray of light is passing from medium 1 to medium 2, then If the medium 1 is air or vacuum, t..

: The incident ray, the refracted ray and the normal to the surface at the point of incidence all lie in one plane. For any two given pair of media, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant. The second law is called Snell's law after the s..

Generally electrical appliances such as an electric bulb, geyser, heater, etc. are rated with power and voltag..

Question: Define refractive index. Answer: The ratio of the speed of light in vacuum to the speed of light in a medium is called the refractive index of the mediu..

This disease is characterised by bleeding gums, loosening of teeth, muscular and joint pain, along with general weakness, fatigue, loss of weight and poor healing powe..

Presbyopia is caused when the centre of the eye lens hardens making it unable to accommodate near vision. This condition generally affects almost everyone over the age of 50 - even those with myop..

Question: List out the factors on which the refractive index of a medium depends. Answer: The refractive index of a medium depends on 1) the nature of the medium 2) the colour or wavelength of the incident lig..

In a neutralization reaction an acid combines with a base, neutralizing the power of acid with a base and forms a molecule of water and the respective salt. In general, a neutralization reaction can be written as: Base + Acid Salt + Wat..

Scattering is a general physical process whereby some forms of radiation, such as light or moving particles, for example, are forced to deviate from a straight trajectory by one or more localized non-uniformities in the medium through which it passe..

(animals which have saprotrophic nutrition) are Mastigamoeba and Chilomonas. The digestive juices are secreted by the cell membranes which means the general body surface as they are single-celled protozoans. Saprotrophs are different from detritus feeders which do not digest their food o..