1
JEE Main 2022 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

If momentum [P], area $$[\mathrm{A}]$$ and time $$[\mathrm{T}]$$ are taken as fundamental quantities, then the dimensional formula for coefficient of viscosity is :

A
$$\left[\mathrm{P} \,\mathrm{A}^{-1} \mathrm{~T}^{0}\right]$$
B
$$\left[\mathrm{P} \,\mathrm{A}\mathrm{~T}^{-1}\right]$$
C
$$\left[\mathrm{P}\,\mathrm{A}^{-1} \mathrm{~T}\right]$$
D
$$\left[\mathrm{P} \,\mathrm{A}^{-1} \mathrm{~T}^{-1}\right]$$
2
JEE Main 2022 (Online) 30th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

If n main scale divisions coincide with (n + 1) vernier scale divisions. The least count of vernier callipers, when each centimetre on the main scale is divided into five equal parts, will be :

A
$${2 \over {n + 1}}$$ mm
B
$${5 \over {n + 1}}$$ mm
C
$${1 \over {2n}}$$ mm
D
$${1 \over {5n}}$$ mm
3
JEE Main 2022 (Online) 27th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The SI unit of a physical quantity is pascal-second. The dimensional formula of this quantity will be :

A
[ML$$-$$1T$$-$$1]
B
[ML$$-$$1T$$-$$2]
C
[ML2T$$-$$1]
D
[M$$-$$1L3T0]
4
JEE Main 2022 (Online) 27th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A silver wire has a mass (0.6 $$\pm$$ 0.006) g, radius (0.5 $$\pm$$ 0.005) mm and length (4 $$\pm$$ 0.04) cm. The maximum percentage error in the measurement of its density will be :

A
4%
B
3%
C
6%
D
7%
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