Physics And Measurement Questions

35 Practice QuestionsStart Practicing Now

[Hard]An experiment determines acceleration due to gravity using a pendulum, with the period known to 1% accuracy and the length known to 2% accuracy. What ...
[Medium]A workshop technician uses a screw gauge whose pitch is 1 mm and whose circular scale carries 100 equal divisions to measure a thin metal sheet. What ...
[Hard]A physicist examines the coefficient of viscosity that appears when describing the slow flow of honey through a narrow tube. What is the dimensional f...
[Hard]A researcher derives the time period of a simple pendulum and suspects it depends on length and gravitational acceleration only. Using dimensional ana...
[Easy]Four students repeatedly measure a fixed rod whose true length is 50.0 cm, and one student's readings cluster tightly around 48.0 cm every time. How i...
[Easy]A traffic study records a vehicle moving at a steady speed of 72 km/h along a straight highway segment. What is this speed expressed in metres per sec...
[Medium]A surveyor multiplies a measured length of 4.2 m by a measured width of 3.15 m to find the area of a rectangular plot. How many significant figures sh...
[Medium]An observatory uses the parallax method to measure the distance of a nearby star by recording its angular shift across the diameter of Earth's orbit. ...
[Easy]A teacher writes the kinetic energy expression for a moving ball and asks students to confirm its dimensions before solving a numerical problem. What ...
[Easy]A student records the period of an oscillating spring four times as 2.01 s, 2.05 s, 1.99 s and 2.03 s during a laboratory session. What is the best es...
[Hard]While studying photon energy, a learner encounters Planck's constant in the relation linking energy and frequency of emitted light. What is the dimens...
[Medium]A student tries to verify an equation containing a sum of a trigonometric term and a constant using dimensional methods but fails to confirm it fully....
[Medium]While determining density, a metal cube has its mass measured with 2% error and the length of each side measured with 1% error in an experiment. What ...
[Easy]An astronomer estimates the diameter of a hydrogen atom as approximately 1.06 angstrom while preparing a scale model of matter. What is the order of m...
[Hard]An engineer notes that pressure and energy density appear in the same equation while studying a compressed gas cylinder. Which statement about their d...
[Medium]A chemistry assistant adds three measured volumes recorded as 12.4 mL, 6.25 mL and 0.0036 mL using graduated glassware. The sum should be reported cor...
[Medium]In a physics tutorial a relation v = a + b t + c t^2 is given for the speed of a moving trolley at time t. What are the dimensions of the constant c i...
[Easy]An examiner asks which of the following physical quantities is recognised as one of the seven base quantities in the International System of Units use...
[Easy]A laboratory measurement of a copper wire gives its length as 7.203 m recorded on a calibrated tape. How many significant figures are present in this ...
[Medium]A student writes the dimensional formula of the universal gravitational constant G while analysing planetary motion in a project report. Which of the ...
[Easy]The dimensions of energy are represented by?...
[Easy]Which of the following is NOT an SI base unit?...
[Medium]Compute (3.42 × 2.1) keeping correct significant figures....
[Easy]A scale consistently reads 0.5 cm more than actual length. This is an example of?...
[Medium]Which equation is dimensionally consistent?...
[Easy]The SI unit Pascal can be expressed dimensionally as?...
[Medium]Compute (12.31 + 0.4 + 3.027) applying significant figure addition rule....
[Medium]A vernier caliper has 10 vernier divisions coinciding with 9 main scale divisions (1 MSD = 1 mm). What is least count?...
[Easy]The order of magnitude of Avogadro number (6.022×10^{23}) is?...
[Medium]Dimensions of Planck's constant h are?...
[Hard]If A = (2.00 ± 0.02) and B = (3.0 ± 0.1), relative error in product P = AB is approximately?...
[Easy]Which instrument generally offers highest precision for small lengths?...
[Medium]Dimensions of universal gravitational constant G?...
[Hard]For a formula for speed v = A t + B/t, dimensions of A and B must be respectively?...
[Easy]Repeated measurements of a length give 12.36, 12.37, 12.36, 12.37 cm while true value is 12.50 cm. This set is?...