On a rainy day, small oil films on water show brilliant colours. This is due to
A). dispersion
B). interference
C). diffraction
D). polarization
interference
On a rainy day, small oil films on water show brilliant colours. This is due to Interference.
Interference is a phenomenon in which two waves superimpose to form a resultant wave of greater, lower or same amplitude.
1. Absolute Zero is defined as
2. The land mass of India has an area of ______ million square km.
5. Which process allows water to enter the atmosphere?
6. Optical fibre works on which of the following principle of light?
7. ?When a charged particle entres a?uniform magnetic field its kinetic energy
8. What is the unit of resistance?
9. If a copper wire is increased to double its length, its resistance will become
10. An object which absorbs all colours and reflects none appears: