JEE Main Physics: Atoms and Nuclei — Chapter Test 1

JEE Main • Physics • Atoms and Nuclei • 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.
• Answers are saved automatically.
• The test is submitted automatically when time runs out.

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SYLLABUS & QUESTION BLUEPRINT

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

Rutherford's alpha-scattering experiment showed that

electrons have charge

the atom has a small dense nucleus

atoms are indivisible

neutrons exist

View Correct Answer & Step-by-Step Solution

Correct Option:(B)the atom has a small dense nucleus

Detailed explanation is available inside the official test attempt review.

Question 2 of 15

The energy of the electron in the ground state of hydrogen is

−13.6 eV

−3.4 eV

13.6 eV

0 eV

View Correct Answer & Step-by-Step Solution

Correct Option:(A)−13.6 eV

Detailed explanation is available inside the official test attempt review.

Question 3 of 15

The energy of the hydrogen electron in the n = 2 state is

−13.6 eV

−6.8 eV

−3.4 eV

−1.51 eV

View Correct Answer & Step-by-Step Solution

Correct Option:(C)−3.4 eV

Detailed explanation is available inside the official test attempt review.

Question 4 of 15

The radius of the nth Bohr orbit is proportional to

n²

1/n

1/n²

View Correct Answer & Step-by-Step Solution

Correct Option:(B)n²

Detailed explanation is available inside the official test attempt review.

Question 5 of 15

In Bohr's model, the angular momentum of the electron is

nh/2π

h/2πn

2πnh

View Correct Answer & Step-by-Step Solution

Correct Option:(B)nh/2π

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: Atoms and Nuclei — 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 "Atoms and Nuclei" 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.