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PhysicsJEE Main 21 Jan 2026, Shift 1·Q7·MCQ·Easy–moderate

Units and Measurements · Dimensional analysis

Consider a modified Bernoulli equation. (P+ABt2)+ρg(h+Bt)+12ρV2=constant\left(P + \frac{A}{Bt^2}\right) + \rho g(h + Bt) + \frac12\rho V^2 = \text{constant} If tt has the dimension of time then the dimensions of AA and BB are , respectively.
  1. (1)[ML0T−1][\mathrm{ML^0T^{-1}}] and [M0LT][\mathrm{M^0LT}]
  2. (2)[ML0T−1][\mathrm{ML^0T^{-1}}] and [M0LT−1][\mathrm{M^0LT^{-1}}]
  3. (3)[ML0T−2][\mathrm{ML^0T^{-2}}] and [M0LT−2][\mathrm{M^0LT^{-2}}]
  4. (4)[ML0T−2][\mathrm{ML^0T^{-2}}] and [M0LT−1][\mathrm{M^0LT^{-1}}]

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