Test: Electromagnetic Waves - 2 - NEET MCQ

# Test: Electromagnetic Waves - 2 - NEET MCQ

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## 10 Questions MCQ Test Physics Class 12 - Test: Electromagnetic Waves - 2

Test: Electromagnetic Waves - 2 for NEET 2024 is part of Physics Class 12 preparation. The Test: Electromagnetic Waves - 2 questions and answers have been prepared according to the NEET exam syllabus.The Test: Electromagnetic Waves - 2 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Electromagnetic Waves - 2 below.
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Test: Electromagnetic Waves - 2 - Question 1

### Wavelength of visible Spectrum ranges from

Detailed Solution for Test: Electromagnetic Waves - 2 - Question 1

The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view. More simply, this range of wavelengths is called visible light. Typically, the human eye can detect wavelengths from 380 to 700
All electromagnetic radiation is light, but we can only see a small portion of this radiation—the portion we call visible light. Cone-shaped cells in our eyes act as receivers tuned to the wavelengths in this narrow band of the spectrum. Other portions of the spectrum have wavelengths too large or too small and energetic for the biological limitations of our perception.
As the full spectrum of visible light travels through a prism, the wavelengths separate into the colors of the rainbow because each color is a different wavelength. Violet has the shortest wavelength, at around 380 nanometers, and red has the longest wavelength, at around 700 nanometers.

Test: Electromagnetic Waves - 2 - Question 2

### The physical properties of electromagnetic waves are decided by their

Detailed Solution for Test: Electromagnetic Waves - 2 - Question 2

Electromagnetic waves vary in wavelength and frequency. Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies. Higher frequency waves have more energy.

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Test: Electromagnetic Waves - 2 - Question 3

Detailed Solution for Test: Electromagnetic Waves - 2 - Question 3

Gamma rays are electromagnetic radiation (high-energy photons) with an extreme frequency and a high energy. They are created by the decay of nuclei as they travel from a high-energy state to a lower state; this process is called “gamma decay.” Most atomic responses are accompanied by gamma emission.

Test: Electromagnetic Waves - 2 - Question 4

Weather forecasting uses

Detailed Solution for Test: Electromagnetic Waves - 2 - Question 4

Weather forecasting makes use of the infrared radiation emitted by cloud formations, which can be captured and transmitted by weather satellites as images to meteorologists.

Test: Electromagnetic Waves - 2 - Question 5

Oscillating circuits produce

Detailed Solution for Test: Electromagnetic Waves - 2 - Question 5

An oscillator is a circuit which produces a continuous, repeated, alternating waveform without any input. Oscillators basically convert unidirectional current flow from a DC source into an alternating waveform which is of the desired frequency, as decided by its circuit components.

Test: Electromagnetic Waves - 2 - Question 6

Which one is not an electromagnetic wave?

Detailed Solution for Test: Electromagnetic Waves - 2 - Question 6

Ultrasound waves are a type of a sound wave which is longitudinal in nature while others are electromagnetic waves because they are transverse in nature.

Test: Electromagnetic Waves - 2 - Question 7

The energy of the em waves is of the order of 15 keV. To which part of the spectrum does it belong?​

Detailed Solution for Test: Electromagnetic Waves - 2 - Question 7

λ=hc/E​=1240evnm /15×103 ​=0.083 nm
Since the order of wavelength is between 10 nm and .001 nm, it belongs to X-ray. part of the spectrum.

Test: Electromagnetic Waves - 2 - Question 8

Microwaves have wavelength in the range of​

Detailed Solution for Test: Electromagnetic Waves - 2 - Question 8

Microwaves are electromagnetic waves with wavelengths longer than those of terahertz (THz) wavelengths, but relatively short for radio waves. Microwaves have wavelengths approximately in the range of about one meter to one millimeter; with frequencies between 300 MHz (1 m) and 300 GHz (1 mm).

Test: Electromagnetic Waves - 2 - Question 9

Electromagnetic Spectrum is

Detailed Solution for Test: Electromagnetic Waves - 2 - Question 9

The orderly distribution of electromagnetic radiations according to their wavelength or frequency as called the electromagnetic spectrum. Radio waves are electromagnetic waves of the frequency range from few Hz to 106 Hz.

Test: Electromagnetic Waves - 2 - Question 10

Infra red rays are used

Detailed Solution for Test: Electromagnetic Waves - 2 - Question 10

Infra red rays are basically heat radiation that gives warmth which support the plant growth. It also helps in treating muscle pain in the same way we use hot water massage for muscle cramps.

## Physics Class 12

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## Physics Class 12

105 videos|425 docs|114 tests