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-I | List-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 :
- A
(A)-(IV), (B)-(II), (C)-(III), (D)-(I)
- B
(A)-(I), (B)-(III), (C)-(IV), (D)-(II)
- C
(A)-(IV), (B)-(II), (C)-(I), (D)-(III)
- 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).
Concept behind this question
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