Units, Measurements & Errors — Advanced + PYQ-Style MCQs

Practice 100 questions on Units, Measurements & Errors — Advanced + PYQ-Style MCQs. Includes: How many significant figures are in 0.010200?; The mean value of 5 measurements is 3.84 s and the…; The SI unit of luminous flux is:. Free quiz on NoteTube.

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1.
Assertion (A): Angular momentum and torque × time have the same dimensions. Reason (R): The SI unit of angular momentum is kg $m^{2}$ $s^{-1}$, and torque × time = N·m·s = kg $m^{2}$ $s^{-1}$.
2.
The refractive index n = c/v. If c is known exactly (no error) and v = (2.0 ± 0.1) × 10^{8} m/s, the percentage error in n is:
3.
For a formula A = (B + C)/(B − C), if $\Delta B$ = $\Delta C$ = ε, what is $\Delta A$/A?
4.
How many significant figures are in 0.010200?
5.
The value of Young's modulus E = Fl/(A$\Delta l$). Its dimensional formula is:

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