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Solve these IIT JEE advanced physics MCQs. Click "View Solution" to see the detailed explanation.

Question 1: A ball is thrown vertically upwards with a velocity of 20 m/s. What is the maximum height reached? (g = 9.8 m/s²)

A) 10.2 m B) 15.3 m C) 20.4 m D) 25.5 m

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Solution: At maximum height, v = 0. Using v² = u² - 2gh → 0 = 400 - 19.6h → h = 20.41 m. Correct answer: C.

Question 2: A block of mass 5 kg is pushed on a frictionless surface with a force of 10 N. What is the acceleration?

A) 1 m/s² B) 2 m/s² C) 3 m/s² D) 4 m/s²

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Solution: F = ma → a = F/m = 10/5 = 2 m/s². Correct answer: B.

Question 3: A capacitor of capacitance 10 μF is charged to 50 V. What is the energy stored in the capacitor?

A) 0.01 J B) 0.0125 J C) 0.02 J D) 0.025 J

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Solution: U = 1/2 CV² = 0.5 × 10×10⁻⁶ × 2500 = 0.0125 J. Correct answer: B.

Question 4: A wire of length 1 m and radius 1 mm has a resistance of 1 Ω. If its radius is doubled and length halved, what is the new resistance?

A) 0.25 Ω B) 0.5 Ω C) 1 Ω D) 0.125 Ω

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Solution: R = ρL/A → new R = ρ(L/2) / (π(2r)²) = (ρL/2) / (4πr²) = R/8 = 0.125 Ω. Correct answer: D.

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