Practice Modern Physics and Everyday Devices – GK Quiz with Answers – Level 2

50 questions. Choose an option and see at once whether it was right, with the correct answer and a worked solution. No timer, and nothing to submit.

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Question 1
Which one of the following pairs of scientist and contribution is correctly matched?
Question 2
Arrange the following developments in atomic physics in chronological order.
1. Einstein explains the photoelectric effect
2. James Chadwick confirms the neutron
3. J. J. Thomson's experiments reveal the electron
Select the correct chronological order.
Question 3
Rutherford discovered the small, heavy, positively charged centre of the atom by studying the:
Question 4
Consider the following statements about Albert Einstein:
1. In 1905, he explained the photoelectric effect by proposing that light comes in small packets of energy.
2. He received the 1921 Nobel Prize in Physics for the theory of relativity.
Which of the statements given above is/are correct?
Question 5
A photocell is also called an 'electric eye' because:

Question 6

Match List-I with List-II:

List-I (Term)	List-II (Description)
A. Alpha decay	1. Time in which half the nuclei of a sample decay
B. Beta decay	2. Emission of high-energy photons
C. Gamma decay	3. Emission of a helium nucleus
D. Half-life	4. Emission of an electron or a positron

Select the correct answer using the codes given below.

Question 7
Radioactivity was discovered accidentally in 1896. Who discovered it, and with compounds of which element was he working?
Question 8
Which one of the following statements about nuclear fission is NOT correct?
Question 9
Which one of the following pairs of device and energy conversion is correctly matched?
Question 10
Which one of the following pairs is correctly matched?