Physics And Measurement Questions

31 Practice QuestionsStart Practicing Now

[Medium]While measuring a metal rod with a vernier caliper of least count 0.01 cm, the main scale reads 3.2 cm and the sixth vernier division coincides with a...
[Medium]Considering v as velocity, v_0 as initial velocity, a as acceleration, t as time and x as distance, which of the following equations is dimensionally ...
[Medium]Assuming the time period of a simple pendulum can depend only on its length, its mass and the acceleration due to gravity, which relation correctly em...
[Medium]A thin rectangular plate is measured to be 4.2 cm long and 2.51 cm wide; following the rules for significant figures, what is the correctly reported a...
[Medium]The density of a uniform sphere is found from its measured mass and radius; if the mass has a 1% error and the radius a 1.5% error, what is the percen...
[Medium]Repeated measurements of a standard 50.0 gram mass cluster tightly between 46.9 gram and 47.1 gram across many trials; how is this set of data best ch...
[Medium]The displacement of a damped oscillator is described by y = A e^{-kt}, where t denotes time and A is an amplitude; what is the dimensional formula of ...
[Medium]A screw gauge of pitch 0.5 mm has 50 circular divisions and a positive zero error of three divisions; while measuring a wire it reads two main-scale d...
[Medium]In the equation x = a t^2 + b t + c describing the displacement of a particle with time, what are the respective dimensions of constants a, b and c?...
[Easy]The diameter of a hydrogen atom is approximately 1.06 × 10^{-10} metre; what is the correct order of magnitude of this length in metre?...
[Easy]A vernier scale has ten divisions that exactly coincide with nine divisions of a main scale whose smallest division equals one millimetre; what is its...
[Easy]How many significant figures are present in the carefully recorded experimental measurement written as 0.00408000 metre by a student?...
[Easy]Among the following commonly used units in physics, which one is a fundamental SI base unit rather than a derived unit?...
[Easy]A laboratory resistor is measured to have a value of 100 ohm with an absolute uncertainty of 2 ohm; what is the percentage error in this reading?...
[Easy]The coefficient of viscosity of a fluid appears in Stokes' law for the drag on a small sphere; what is its dimensional formula?...
[Medium]A physical quantity is computed from the relation Z = A^2 B / C, where A, B and C carry percentage errors of 1%, 2% and 3% respectively; what is the m...
[Easy]Which pair correctly represents a derived physical quantity and its SI unit?...
[Medium]Five measurements of a time period: 2.13 s, 2.15 s, 2.11 s, 2.14 s, 2.12 s. Mean and absolute error (half range) are:...
[Easy]Which is dimensionless?...
[Easy]1 erg equals how many joules?...
[Medium]Q = A B where A = (5.0 ± 0.2) and B = (2.00 ± 0.05). Fractional error in Q is:...
[Easy]What is the result when you convert 3.5×10^5 cm^3 to m^3?...
[Medium]Which combination has dimensions of pressure?...
[Easy]Pitch of a screw gauge is 0.5 mm and circular scale has 50 divisions. Least count is:...
[Medium]Earth's radius ≈ 6.37×10^6 m. Its order of magnitude is:...
[Medium]Result of (3.20 + 0.457) / 2.0 with correct significant figures is:...
[Easy]Velocity v = A t + B t^2. Dimensions of B are:...
[Easy]Main scale division = 1 mm. 10 vernier divisions coincide with 9 main scale divisions. Least count is:...
[Easy]Length of a rod measured with meter scale (least count 1 mm) is 52.6 cm. Absolute uncertainty (±) you quote is:...
[Medium]Number of significant figures in 0.0040700 is:...
[Easy]If gravitational potential energy between two masses is U = - G m_1 m_2 / r, what are dimensions of G?...