EM Waves

Question 1

To what height troposphere extends? And how much is the drop in temperature?

Answer 1

12 Km. 290K-220K.

Question 2

To what height does stratosphere extends? How does the temperature differ?

Answer 2

12km to 50km. There is an increase in temperature from 220K to 280K

Question 3

To what height does mesosphere extends? Difference in temperature?

Answer 3

50km to 80km. Temperature drops from 280K to 180K

Question 4

To what height does ionosphere extends? Difference in temperature?

Answer 4

80km to 400km. Temperature rises from 180K to 700K

Question 5

Which rays are emited during the radioactive decay of nucleus?

Answer 5

Gamma rays

Question 6

Vibration of atoms and molecules results in emission of what rays?

Answer 6

Infrared

Question 7

Which EM wave is used for lasik eye surgery?

Answer 7

UV

Question 8

Which EM wave improves visibility in foggy days?

Answer 8

Infrared

Question 9

Which waves are found from inner shell electron?

Answer 9

X ray

Question 10

Which em wave is emitted during the acceleration and deacceleration of electron?

Answer 10

Radio waves

Question 11

What is the right hand rule for electromagnetism?

Answer 11

Index finger- electric field
Middle finger- magnetic field
Thumb- propagation of em waves

Question 12

What is the source of micro-waves?

Answer 12

Magnetron or Klystron valve

Question 13

Infrared radiation are detected by what?

Answer 13

Pyrometer

Question 14

What principle does microwave oven acts on?

Answer 14

Giving rotational energy to water molecules