Cengage Expert Team Solutions for Chapter: Electromagnetic Radiation, Exercise 2: PERFECTING PAST PRELIMS

Author:Cengage Expert Team

Cengage Expert Team General Awareness Solutions for Exercise - Cengage Expert Team Solutions for Chapter: Electromagnetic Radiation, Exercise 2: PERFECTING PAST PRELIMS

Attempt the free practice questions on Chapter 7: Electromagnetic Radiation, Exercise 2: PERFECTING PAST PRELIMS with hints and solutions to strengthen your understanding. Science and Technology For UPSC and Other State Services Examinations solutions are prepared by Experienced Embibe Experts.

Questions from Cengage Expert Team Solutions for Chapter: Electromagnetic Radiation, Exercise 2: PERFECTING PAST PRELIMS with Hints & Solutions

MEDIUM
Bihar Police SI Prelims
IMPORTANT
Science and Technology For UPSC and Other State Services Examinations>Chapter 7 - Electromagnetic Radiation>PERFECTING PAST PRELIMS>Q 1

Assertion (A): In the visible spectrum of light, red light is more energetic than green light.

Reason (R): The wavelength of red light is more than that of green light.

MEDIUM
Bihar Police SI Prelims
IMPORTANT
Science and Technology For UPSC and Other State Services Examinations>Chapter 7 - Electromagnetic Radiation>PERFECTING PAST PRELIMS>Q 2

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

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

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: