Question
What is the unit of the refractive
index?Solution
The refractive index is a dimensionless quantity that measures how much light bends when it passes from one medium to another. Since it is a ratio of speeds, it has no units.
For a wave, wavelength divided by the time period equals ________.
The splitting up of white light into seven colours on passing through a glass prism is called as
Which of the following is the best fire-extinguisher?
What is the audible frequency range?
Einstein was awarded Nobel Prize for –
Which atmospheric layer contains ozone layer?
A simple microscope consists of :
Which of the following Instrument is used to measure humidity?
What is the frequency of Ultrasonic Waves?
 Photovoltaic cells are:Â