Let us trace through the key claims step by step. The passage discusses how clock accuracy relates to entropy creation. The main discovery is that more accurate clocks create more disorder (entropy) as the "price" for their precision. From passage: "The researchers found that as they increased the clock's accuracy, the heat produced in the system grew, increasing the entropy of its surroundings... In this case, you pay for it by pouring more ordered energy into the clock, which is then converted into entropy." Key insight: Heat is produced -> but entropy is the actual price paid. The passage makes a distinction between what happens (heat production) and what the cost actually is (entropy increase).

🟢 Option 1 -> directly stated -> "We can't be sure yet that these results are actually universal" clearly shows uncertainty about applying this to all clocks 🔴 Option 2 -> misrepresents the argument -> Says heat is the "price paid" but passage argues entropy is the price, while heat just causes entropy increase 🟠 Option 3 -> contradicts passage -> Passage says grandfather clock "isn't more precise than an atomic clock" meaning atomic clocks ARE more accurate 🟢 Option 4 -> directly stated -> "both accuracy and temperature are crucial" for quantum computer clocks

The confusion often comes between options 2 and 3. Both seem wrong, but option 2 is the tricky one. Students might think: "The passage mentions heat production, so isn't that the price?" The key distinction: Heat production happens -> this causes entropy increase -> entropy is the actual cost. Heat is just the mechanism, not the price itself. Option 3 is clearly contradicted, but option 2 subtly misrepresents the causal relationship the author establishes. This was a highly controversial question. The official answer key says option 2 but we believe the right option is 3. However, we're keeping option 2 as the answer-key as CAT officials gave marks for option 2 only.

CAT (VARC) PYQs

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