Correctly matched pairs (Theory/Law — Scientist) — UPSC Prelims PYQ 2008

Which of the following pairs is/are correctly matched?

Theory/Law — Associated Scientist

1. Continental Drift — Edwin Hubble
2. Expansion of Universe — Alfred Wegener
3. Photoelectric Effect — Albert Einstein

Select the correct answer using the code given below:

1. 2 and 3 only
2. 3 only
3. 2 only
4. 1 only

Explanation

Option (b) is correct

• Continental Drift was proposed by Alfred Wegener, not Edwin Hubble, so pair 1 is incorrect. The Expansion of the Universe is associated with Edwin Hubble, not Alfred Wegener, making pair 2 incorrect. The Photoelectric Effect was correctly explained by Albert Einstein, so pair 3 is correct. Therefore, only pair 3 is correctly matched.

Answer: (b) 3 only