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UPSC 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:
(a)2 and 3 only
(b)3 only
(c)2 only
(d)1 only
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Not attemptedCorrect Answer: (b) 3 only
Continental Drift was proposed by Alfred Wegener, not Edwin Hubble; the expansion of the Universe was demonstrated observationally by Edwin Hubble, not Wegener; the photoelectric effect was explained by Albert Einstein (Nobel Prize 1921). Therefore only pair 3 is correct, giving option (b). ([britannica.com](https://www.britannica.com/science/continental-drift-geology?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2008 Science & Technology question?▼
The correct answer is option (b): 3 only. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Science & Technology History question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2008, GS Paper 1, as Question 47. It falls under Science & Technology > Science & Technology History.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Science & Technology History?▼
UPSC has asked 21 questions from Science & Technology History (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.