WBJEE Physics and Measurement — practice questions
31 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice WBJEE Physics and Measurement in the app →SI base unit of length:Dimension of force:Dimension of energy:Dimensions of pressure:Significant figures in 0.00302:Dimension of universal gravitational constant G:Dimension of Planck's constant h:Dimension of electric field E:Order of magnitude of 4567:Relative error of measurement 5.00 ± 0.05 cm:Dimensions of frequency:Quantity having same dimensions as Planck's constant:Avogadro number N_A is:Dimensional formula of moment of inertia:Error in product Q = A × B with relative errors a and b:For Q = A²/B, fractional error:Screw gauge: pitch 0.5 mm, 50 divisions on circular scale. Least count:Mean of measurements: x̄. Standard error of mean for n trials:Power consumed P = V²/R. If V measured to 2% and R to 1%, find error in P:For experimentally found pendulum T = 2π sqrt(L/g), Length L = 1.00 m ± 0.01 m, T = 2.00 s ± 0.01 s. Find g anSignificant figures in measurement 30.50:In Young's modulus determination: Y = (FL)/(A ΔL). Maximum percentage error if F (force) 1%, L (length) 2%, A Unit of viscosity in SI:Conversion: 1 joule = ___ erg:For Q = A + B with absolute errors a and b: error in Q:Number of significant figures in 1.20 × 10⁻³ kg:Dimensions of strain:In SI, prefix 'tera' represents:For relation v = u + at, dimensional consistency requires:Dimensional formula of Stefan-Boltzmann constant σ (P = σAT⁴):For the formula λ = h/p (de Broglie), dimensional consistency: