NEET 2024 Question Papers with Solution Explanation | mosaicbro.com

NEET 2024 Question Papers with Solution Explanation

#Neet #2024 #Past NEET 2024 Question Paper with Solution . All MCQs with correct keys.

7 of 50 questions (Page 4 of 8)

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22 In a charging parallel plate capacitor, the displacement current in the gap is:
Correct Answer: B
Explanation: Displacement current \(I_d = I\) (conduction current) and maintains continuity.
23 Which property is NOT true for EM waves in free space?
Correct Answer: D
Explanation: EM waves originate from accelerated charges, not uniform motion.
24 A metallic bar (Y=0.5×10¹¹ N/m², α=10⁻⁵/°C, L=1 m, A=10⁻³ m²) heated 0°C to 100°C without expansion develops compressive force:
Correct Answer: B
Explanation: Force \(F = YAαΔT = 0.5×10¹¹ × 10⁻³ × 10⁻⁵ × 100 = 50 × 10³ \, \text{N}\).
25 The correct bridge-balanced circuit is:
Correct Answer: A
Explanation: Only option (1) shows a Wheatstone bridge configuration for balance.
26 A sheet near a strong magnetic pole requires force to: A: Hold if magnetic. B: Hold if non-magnetic. C: Move if conducting. D: Move if non-conducting/non-polar. Correct statement(s):
Correct Answer: B
Explanation: Force is needed to hold magnetic material (A) and to move conducting sheet (C) due to eddy currents.
27 When parallel plate capacitor plates are moved closer: A: Charge increases. B: Energy decreases. C: Capacitance increases. D: Q/V remains same. E: QV increases. Correct option:
Correct Answer: B
Explanation: Capacitance \(C ∝ \frac{1}{d}\) increases, but Q/V (capacitance) remains same if connected to battery (D). QV increases as Q increases (E).
28 Two heaters (1 kW and 2 kW) connected in series then parallel. The power output ratio (series : parallel) is:
Correct Answer: B
Explanation: Series: \(P_{series} = \frac{V^2}{R_1 + R_2}\). Parallel: \(P_{parallel} = \frac{V^2}{R_1} + \frac{V^2}{R_2}\). Ratio calculates to 2:9.
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