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JEE Main 2025 Apr 7 Shift 2, Physics Q12: Units And Dimensions

JEE Main2025Apr 7, Shift 2Physics
Q.

Match List-I with List-II.

List-IList-II
(A) Mass density(I) [MLT]
(B) Impulse(II) [MLT]
(C) Power(III) [MLT]
(D) Moment of inertia(IV) [MLT]

Choose the correct answer from the options given below :

  1. A

    (A)-(IV), (B)-(II), (C)-(III), (D)-(I)

  2. B

    (A)-(I), (B)-(III), (C)-(IV), (D)-(II)

  3. C

    (A)-(IV), (B)-(II), (C)-(I), (D)-(III)

  4. D

    (A)-(II), (B)-(III), (C)-(IV), (D)-(I)

Solution

Mass density is mass per unit volume: , matching (IV).

Impulse equals momentum change, : , matching (II).

Power is energy per unit time or force times velocity: , matching (I).

Moment of inertia is mass times length squared: , matching (III).

Thus (A)-(IV), (B)-(II), (C)-(I), (D)-(III).

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