MEDIUM
Bihar Police SI Prelims
IMPORTANT
Earn 100

Assertion (A): Radio waves bend in a magnetic field.

Reason (R): Radio waves are electromagnetic in nature.

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Important Questions on Electromagnetic Radiation

MEDIUM
Bihar Police SI Prelims
IMPORTANT
Science and Technology For UPSC and Other State Services Examinations>Chapter 7 - Electromagnetic Radiation>PERFECTING PAST PRELIMS>Q 3
Which one among the following has the highest energy?
MEDIUM
Bihar Police SI Prelims
IMPORTANT
Science and Technology For UPSC and Other State Services Examinations>Chapter 7 - Electromagnetic Radiation>PERFECTING PAST PRELIMS>Q 4

Which one of the following types of a wave is used in the night vision apparatus?  

MEDIUM
Bihar Police SI Prelims
IMPORTANT
Science and Technology For UPSC and Other State Services Examinations>Chapter 7 - Electromagnetic Radiation>PERFECTING PAST PRELIMS>Q 5

Consider the following:

1. Bluetooth device

2. Cordless phone

3. Microwave oven

4. Wi-Fi device

Which of the above can operate between 2-4 and 2-5 GHz range of radio frequency band?

HARD
Bihar Police SI Prelims
IMPORTANT
Science and Technology For UPSC and Other State Services Examinations>Chapter 7 - Electromagnetic Radiation>PERFECTING PAST PRELIMS>Q 6

If a potato is placed on a pure paper plate that is white and unprinted and put in a microwave oven, the potato heats up but, the paper plate does not. This is because:

MEDIUM
Bihar Police SI Prelims
IMPORTANT
Science and Technology For UPSC and Other State Services Examinations>Chapter 7 - Electromagnetic Radiation>PERFECTING PAST PRELIMS>Q 7
The increasing amount of carbon dioxide in the air is slowly rising the temperature of the atmosphere because it absorbs: