Question : Which of the following waves cannot be polarized?
Option 1: Radio
Option 2: Ultraviolet
Option 3: Infrared
Option 4: Ultrasonic
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Correct Answer: Ultrasonic
Solution : The correct answer is Ultrasonic.
There are two distinct categories of waves: transverse waves and longitudinal waves. Unlike transverse waves, longitudinal waves are incapable of polarisation. Ultrasonic waves, falling under the longitudinal wave category, are consequently unable to undergo polarisation.
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Question : What is the correct order of radiations in descending order of frequencies?
Option 1: Infrared > Microwaves > Radio waves > X-rays
Option 2: Radio waves > X-rays > Microwaves > Infrared
Option 3: X-rays > Infrared > Microwaves > Radio waves
Option 4: Infrared > Microwaves > X-rays > Radio waves
Question : Ozone protects biosphere from:
Option 1: X -rays
Option 2: Gamma rays
Option 3: Ultraviolet rays
Option 4: Infrared rays
Question : The ozone layer is formed due to reactions of:
Option 1: oxygen and ultraviolet rays
Option 2: carbon dioxide and layers of the atmosphere
Option 3: cosmic rays and layers of atmosphere
Option 4: infrared rays and ultraviolet rays
Question : The layer of the atmosphere in which Radio Waves are reflacted back is called :
Option 1: ionosphere
Option 2: troposphere
Option 3: stratosphere
Option 4: exosphere
Question : 'Tsunami' is the name given to which of the following?
Option 1: Earthquake
Option 2: Cyclone
Option 3: Tidal Waves
Option 4: Undersea Waves
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