Q. 1. Define spectroscopy?
Ans.
Spectroscopy
is the study of interaction between electromagnetic radiation and matter.
Q.
2. What is electromagnetic radiation?
Ans.
Electromagnetic
radiations are form of energy which possess both matter like as well as wave
like properties and can be transferred from one point to another even through
empty space.
Q.
3. Define nature of electromagnetic radiations?
Ans.
Electromagnetic
radiations possess dual nature. In some interactions it behaves as wave but in
others it shows corpuscular or particle like nature but it cannot shows both
phenomenon simultaneously.
Q.
4. Differentiate some phenomenon when electromagnetic radiations behave
differently or show their particle like or wave like nature?
Ans.
Some
common phenomenons when electromagnetic radiations behave as wave are interference,
diffraction, reflection and refraction. While photoelectric effect, Compton
effect and Pair production are some examples when electromagnetic radiations
show corpuscular matter like nature.
Q.
5. Which component of electromagnetic radiation interacts with matter?
Ans.
The
electrical vector of these electromagnetic radiations interacts with atoms and
molecules. Depending upon the nature of matter this interaction results in transmission,
absorption or scattering of electromagnetic radiations.
Q.
6. Explain the phenomenon that occurs during interaction of matter with
electromagnetic radiations?
Ans.
Common
phenomenons occurring during the interaction of electromagnetic radiations with
matter are dispersion, refraction, absorption, polarization, refraction and
scattering.
Q.
7. Differentiate between electromagnetic radiations and matter waves?
Ans.
There
are some common differences between electromagnetic radiations and matter waves
which are given as follows
1.
Electromagnetic
radiations possess both electric and magnetic fields while on the other hand
matter waves lack these components.
2.
Electromagnetic
waves do not require any medium for propagation, in contrast matter waves require proper medium for movement they
cannot travel in space.
3.
Electromagnetic
radiations move at the velocity of light but the velocity of matter waves
depends upon the nature of matter.
4.
Electromagnetic
waves can show both wave like and matter like nature contrarily matter waves do
not possess this quality.
Q.
8. What is photon?
Ans.
A
photon can be defined as quantum of electromagnetic radiations with zero rest
mass and possess some energy which is equal to product of frequency of these
radiations and planks constant.
Q.
9. What is electromagnetic spectrum?
Ans.
An
electromagnetic spectrum can be defined as orderly arrangement of all the
electromagnetic radiation according to increasing wavelength or decreasing
frequencies.
Q.
9. Which are different types of electromagnetic radiations?
Ans.
There
are eight types of electromagnetic radiations which are listed as follows
1. Cosmic rays
2. Gamma rays
3. X-rays
4. Ultraviolet (UV)
5. Visible (visible light that we see)
6. Infrared (IR)
7. Microwaves
8. Radio waves
Q.
10. What is the common parameter in all types of electromagnetic radiations?
Ans.
All
the electromagnetic radiations move at the same speed or we can say at the
velocity of light which is 3 × 108 m/sec.
Q.
11. Which electromagnetic radiations possess highest and which possess lowest
energy?
Ans.
Cosmic
rays are the most energetic radiations while radio waves contain the least energy.
Q.
12. Which electromagnetic radiations possess longest and which possess shortest
wavelength?
Ans.
Radio
waves possess the longest wavelength among all other electromagnetic radiations
while cosmic rays have shortest wavelength among others.
0 Comments