electromagnetic spectrum

Question 1

Armstrong range for x rays

Answer 1

less than 0.1 Å

Question 2

Armstrong range for UV rays

Answer 2

0.1Å - 100Å

Question 3

Armstrong range for vibgyor

Answer 3

100 Å - 4000 Å

Question 4

Armstrong range for infrared rays

Answer 4

4000 Å - 8000 Å

Question 5

Armstrong range for microwaves

Answer 5

10^7 Å - 10^11 Å

Question 6

Armstrong range for radio waves

Answer 6

greater than 10^11 Å

Question 7

the relation between energy and wavelength

Answer 7

inversely proportional.

Question 8

uses of gamma rays

Answer 8

• -> treatment of cancer and tumors

- -> used for the study of the nucleus (high penetrating power)

Question 9

uses of x rays

Answer 9

• -> detection of fractures

- -> study of atomic crystal

Question 10

uses of ultraviolet radiation

Answer 10

• -> sterilizing purpose of chemically active AgCl

- -> killing bacteria

Question 11

which prism is used in ultraviolet radiation

Answer 11

quartz prism

Question 12

which prism is used for infrared rays

Answer 12

rock salt prism

Question 13

uses of infrared rays

Answer 13

• -> photography at night and in fogs

- -> used for sending signals in war

Question 14

properties of infrared rays

Answer 14

• -> scatter least

- -> travels undeviated for long distances

Question 15

radiations which are detected by the thermopile

Answer 15

infrared rays

Question 16

what is the speed of all the electromagnetic rays

Answer 16

3.8 x 10^8 m/s

Question 17

the relation between frequency and wavelength

Answer 17

inversely proportional

Question 18

which electromagnetic radiation has the highest frequency

Answer 18

gamma rays

Question 19

which color scatter most

Answer 19

violet

Question 20

which color scatters least

Answer 20

red

Question 21

wavelength and scattering relation

Answer 21

inversely proportional

Question 22

what is rayleigh’s law

Answer 22

scattering of a particle is inversely proportional to lambda of the particle raised to the power of 4