Light travels in a straight line (rectilinear propagation of light). This statement does hold if the medium of travel for light is
of variable refractive index
made up of slabs of different refractive indices
homogeneous and transparent
inhomogeneous and transparent
For election to the Lok Sabha, a nomination paper can be filed by
Miscellaneous · Easy
In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a
Miscellaneous · Easy
Which among the following events happened earliest ?
Miscellaneous · Easy
An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
Miscellaneous · Easy