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Year 11 Exam  >  Year 11 Tests  >  Physics for GCSE/IGCSE  >  Test: Electromagnetic Spectrum - Year 11 MCQ

Test: Electromagnetic Spectrum - Year 11 MCQ


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10 Questions MCQ Test Physics for GCSE/IGCSE - Test: Electromagnetic Spectrum

Test: Electromagnetic Spectrum for Year 11 2024 is part of Physics for GCSE/IGCSE preparation. The Test: Electromagnetic Spectrum questions and answers have been prepared according to the Year 11 exam syllabus.The Test: Electromagnetic Spectrum MCQs are made for Year 11 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Electromagnetic Spectrum below.
Solutions of Test: Electromagnetic Spectrum questions in English are available as part of our Physics for GCSE/IGCSE for Year 11 & Test: Electromagnetic Spectrum solutions in Hindi for Physics for GCSE/IGCSE course. Download more important topics, notes, lectures and mock test series for Year 11 Exam by signing up for free. Attempt Test: Electromagnetic Spectrum | 10 questions in 20 minutes | Mock test for Year 11 preparation | Free important questions MCQ to study Physics for GCSE/IGCSE for Year 11 Exam | Download free PDF with solutions
Test: Electromagnetic Spectrum - Question 1
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What is the speed of electromagnetic waves in a vacuum?

Detailed Solution for Test: Electromagnetic Spectrum - Question 1

The speed of electromagnetic waves in a vacuum is 3.0 × 108 m/s.

Test: Electromagnetic Spectrum - Question 2
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Which type of electromagnetic wave is used in thermal imaging cameras?

Detailed Solution for Test: Electromagnetic Spectrum - Question 2
Infrared light is emitted by warm objects and can be detected using thermal imaging cameras.
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Test: Electromagnetic Spectrum - Question 3
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What phenomenon allows certain substances to absorb UV light and re-emit it as visible light?

Detailed Solution for Test: Electromagnetic Spectrum - Question 3
Fluorescence occurs when substances absorb ultraviolet light and re-emit it as visible light.
Test: Electromagnetic Spectrum - Question 4
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What is the primary use of X-rays in medicine?
Detailed Solution for Test: Electromagnetic Spectrum - Question 4
X-rays are primarily used in medicine for imaging purposes, such as creating images of bones.
Test: Electromagnetic Spectrum - Question 5
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Which of the following is a property of microwaves used in communication?
Detailed Solution for Test: Electromagnetic Spectrum - Question 5
Microwaves are reflected by metal walls, which is why microwave ovens have metal walls and a grid in the door to contain the energy.
Test: Electromagnetic Spectrum - Question 6
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Why are geostationary satellites ideal for radio and telecommunication broadcasting worldwide?
Detailed Solution for Test: Electromagnetic Spectrum - Question 6
Geostationary satellites orbit above the Earth's equator, making them ideal for consistent global communication coverage.
Test: Electromagnetic Spectrum - Question 7
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What is the main risk associated with high-frequency electromagnetic waves such as gamma rays?
Detailed Solution for Test: Electromagnetic Spectrum - Question 7
High-frequency electromagnetic waves like gamma rays are highly ionizing and can cause mutations leading to cancer.
Test: Electromagnetic Spectrum - Question 8
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Which type of signal can only be in one of two discrete states?
Detailed Solution for Test: Electromagnetic Spectrum - Question 8
Digital signals can only be in one of two discrete states, typically represented as 1s and 0s.
Test: Electromagnetic Spectrum - Question 9
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Which type of electromagnetic wave is commonly used in fiber optic communication systems?
Detailed Solution for Test: Electromagnetic Spectrum - Question 9
Infrared light is more efficient in traveling through fiber optic cables compared to visible light.
Test: Electromagnetic Spectrum - Question 10
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What advantage does digital signalling have over analogue signalling?
Detailed Solution for Test: Electromagnetic Spectrum - Question 10
Digital signals typically have a larger range than analogue signals, enabling them to cover greater distances.
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