Physics and Measurement — practice questions
45 curated practice questions from Physics and Measurement (Physics JEE Advanced, NTA Exams) — 22 medium, 23 hard. Every question includes the final answer free; step-by-step worked solutions with a free account.
- A temperature difference can generate e.m.f. in some materials. Let S be the e.m.f. produced per unit temperature…
- Let [ε 0 ] denote of the permittivity of the vacuum, and [μ 0 ] denote the permeability of the vacuum. If M = mass, L =…
- Which of the following combinations have the dimensions of time? L, C, R represent inductance, capacitance and…
- Which of the following sets have different dimensions?
- If f = x 2 , then the relative error in f is
- Using the expression 2 d sin q = l , one calculates the values of d by measuring the corresponding angles q in the…
- A student measures the time period of 100 oscillations of a simple pendulum four times. The data set is 90 s, 91s, 95 s…
- If A B = B A , then the angle between A and B is :
- The magnitude of the vector product of two vectors is 3 times their scalar product. The angle between the two vectors is
- Young’s modulus of elasticity Y is expressed in terms of three derived quantities, namely, the gravitational constant G…
- The maximum static friction on a body is F = µΝ. Here, N = normal reaction force on the body µ = coefiicient of static…
- Pressure depends on distance as, P= ( - z k ), where α, β are constants, z is distance, k is Boltzmann’s constant and θ…
- The dimensions of the quantities in one (or more) of the following pairs are the same. Identify the pair(s).
- The focal length of a mirror is given by 1 f = 1 u + 1 v where u and v represent object and image distances…
- In a system of units if force (F), acceleration (A) and time (T) are taken as fundamental units then which of the…
- The dimensions of length are expressed as G x c y h z , where G, c and h are the universal gravitational constant…
- The value of universal gas constant is R = 8.3 J/K – mol. The value of R in atmosphere litre per kelvin mol
- A physical quantity is represented by X = M a L b T –c . If percentage errors in the measurements of M, L and T are α%…
- In the equation X = 3YZ 2 , X and Z have dimensions of capacitance and magnetic induction respectively. In MKSQ system…
- If x = a – b, the the maximum percentage error in the measurement of x will be
- A cube has a side of length 1.2 × 10 –2 m. Calculate its volume.
- Sometimes it is convenient to construct a system of units so that all quantities can be expressed in terms of only one…
- If P Q = 0, then | P Q | is
- Let us consider a system of units in which mass and angular momentum are dimensionless. If length has dimension of L …
- If the measurement errors in all the independent quantities are known, then it is possible to determine the error in…
- The rational number, which equals the number with recurring decimal is
- If v = A t + Bt ^ 2 + Ct ^ 3 where v is velocity, t is time and A, B and C are constants, then the dimensional formula…
- Given, potential difference V = (8±0.5) volt and currect I = (2±0.2)A. the value of resistance R is
- Given r =4 j and p =2 i +3 j + k . The angular momentum is
- If A =2 i + j + k and B = i + j + k are two vectors, then the unit vector
- Given A =4 i +6 j and B =2 i +3 j . Which of the following is correct ?
- If vectors A and B are given by A =5 i +6 j +3 k and B =6 i -2 j -6 k . Which of the following is/are correct?
- In electromagnetic theory, the electric and magnetic phenomena are related to each other. Therefore, the dimensions of…
- Given c = a b . The angle which a makes with c is
- A dimensionless quantity is constructed in terms of electronic charge e , permittivity of free space ε 0 , Planck’s…
- Length, breadth and thickness of a strip having a uniform cross section are measured to be 10.5 cm, 0.05 mm, and 6.0 m…
- In the formula X = 3 YZ 2 , X and Z have dimensions of capacitance and magnetic induction respectively. What are the…
- The lenght , breadth b and thickness t of a block are measured with the help of a metre scale. Given l = 15.12 ± 0.01…
- The specific resistance ρ of a circular wire of radius r, resistance R and lenght l is given by = r^ 2 R . Given, r =…
- In an experiment to determine the acceleration due to gravity g , the formula used for the time period of a periodic…
- The number of particles given by n = – D n_ 2 -n_ 1 x_ 2 -x_ 1 are crossing a unit area perpendicular to x–axis in unit…
- In a resonance tube with tuning fork of frequency 512 Hz, first resonance occurs at water level equal to 30.3 cm and…
- If ( v _ 1 + v _ 2 ) is perpendicular to ( v _ 1 - v _ 2 ) then
- A wire of length l = 6 ± 0.06 cm and radius r = 0.5 ± 0.005 cm and mass m = 0.3 ± 0.003 g. Maximum percentage error in…
- A student uses a simple pendulum of exactly 1 m length to determine g , the acceleration due to gravity. He uses a stop…