JEE Main Physics: Electromagnetic Waves — Chapter Test 1

JEE Main • Physics • Electromagnetic Waves • Chapter Test

EasyFREE

Questions

20 min

Duration

Marks (1 each)

Negative marking

Original practice questions with full solutions by ExamPortal.

Instructions

• Read each question carefully and pick the correct answer.
• You can mark questions for review and come back to them.
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• The test is submitted automatically when time runs out.

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Sample Practice Questions

Preview 5 sample questions from this 15-question test. Test your knowledge below or take the full exam in timed CBT mode.

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Question 1 of 15

The speed of electromagnetic waves in vacuum is

√(μ₀ε₀)

1/√(μ₀ε₀)

μ₀ε₀

1/(μ₀ε₀)

View Correct Answer & Step-by-Step Solution

Correct Option:(B)1/√(μ₀ε₀)

Detailed explanation is available inside the official test attempt review.

Question 2 of 15

Which electromagnetic waves have the shortest wavelength?

radio waves

X-rays

gamma rays

ultraviolet

View Correct Answer & Step-by-Step Solution

Correct Option:(C)gamma rays

Detailed explanation is available inside the official test attempt review.

Question 3 of 15

Which waves are used in RADAR?

microwaves

X-rays

gamma rays

ultraviolet

View Correct Answer & Step-by-Step Solution

Correct Option:(A)microwaves

Detailed explanation is available inside the official test attempt review.

Question 4 of 15

Which radiation is used to kill germs in water purifiers?

infrared

ultraviolet

radio waves

microwaves

View Correct Answer & Step-by-Step Solution

Correct Option:(B)ultraviolet

Detailed explanation is available inside the official test attempt review.

Question 5 of 15

Heat radiation from the Sun that we feel is mainly

ultraviolet

infrared

X-rays

gamma rays

View Correct Answer & Step-by-Step Solution

Correct Option:(B)infrared

Detailed explanation is available inside the official test attempt review.

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Frequently asked questions

How many questions are there in JEE Main Physics: Electromagnetic Waves — Chapter Test 1?

There are 15 questions to answer in 20 min. Each correct answer gives 1 mark, for a total of 15 marks.

Is there negative marking?

No. Wrong answers do not lose marks, so attempt every question.

Is this mock test free?

Yes, it is completely free. Just log in with your email to start.

What does this test cover?

It covers the chapter "Electromagnetic Waves" of JEE Main Physics. All questions are original, with a full solution for each.

Will I see my result and the solutions?

Yes. Right after you submit you get your score, accuracy, rank and percentile, and you can review every question with the correct answer and a step-by-step explanation.

Can I take this test again?

Yes, you can retake it as many times as you like and compare your scores.