Question
The radiation initially produced in fluorescent tube is
–Solution
The primary radiation that is initially produced within a fluorescent lamp is analogous to that emitted by a low pressure mercury lamp. Fluorescent lamps produce UV radiation by ionizing low-pressure mercury vapour. A phosphorescent coating on the inside of the tubes absorbs the UV and converts it to visible light.
Addition of ethylene dibromide to petrol
What is the process of changing a substance directly from solid to gas called ?
A nucleus X of mass number 238 undergoes 3 α-decays and 2 β⁻-decays successively. The mass number and atomic number of the resulting nucleus Y are:...
A fluid flows through a horizontal pipe. The pressure drops by 2000 Pa and speed increases from 2 m/s to 4 m/s. Find density.
What is the smallest unit of the kidney called?
Which period and group in the long form of periodic table contain maximum number of elements?
Galvanisation is the process of depositing a layer of ________ on iron.
You will see that the atomic radius decreases in moving from left to right along a period in the Periodic Table. The reason for this is-
Which planet is known as the Red Planet?
Which muscle type is involuntary and found in internal organs?
