Explain the Fluorescence ?
Answer / guest
Some substance become luminous when light of a certain wave
length falls upon them. The wave length of the light emitted
by them is always different from that by which they are
illuminated. This phenomenon is called fluorescence e.g.
floorsper, chlorophylle.
| Is This Answer Correct ? | 4 Yes | 0 No |
how much mercury overflows when a glass vessel filled to the brim with 50 cubic centimeter of mercury 15°C is heated to 75°C of glass?
Explain band theory ?
What percentage of mind Albert Einstein used ?
what happens to the period of a simple pendulum taken into a deep mine ?
Why does a body weigh more at the poles than at the equator?
What is Colours of bodies ?
list and describe the three types of transformer?
In any current connection there are two wires one is phase and another is neutral, what is the use of neutral wire?
For which type of waves is the principle of superposition valid?
Why ate the telegraph wires kept a little loose ?
How many types of wave motions are there?
When the sound intensity is above 120 decibel, what happen to human ears?