Units and Measurement questions
875 published questions with worked solutions.
- A physical quantity A is related to four observables a,b,c and d as follows: A= a^2b^3 c d . The percentage errors of measurement...
- X=3YZ^2. Find the dimension of Y in the MKSA system, if X and Z are the dimensions of capacity and magnetic field respectively....
- The relative density of material of a body is found by weighing it first in air and then in water. If the weight in air is (5.00...
- The density of a material in the CGS system of units is 4 ,g/cm^3. In a system of units in which the unit of length is 10 ,cm and...
- If the acceleration due to gravity is 10 ,ms^ -2 and the units of length and time are changed to kilometre and hour respectively,...
- The period of oscillation of a simple pendulum in an experiment is recorded as 2.63 ,s,2.56 ,s,2.42 ,s,2.71 ,s and 2.80 ,s...
- A body travels uniformly a distance of (13.8 0.2) ,m in a time of (4.0 0.3) ,s. The percentage error in the velocity of the body...
- A physical quantity P is given by P= A^3B^ 1/2 C^ -4 D^3 . The quantity which brings in the maximum percentage error in P is
- In an experiment, to measure the height of a bridge by dropping a stone into the water underneath, if the error in measurement of...
- If the error in the measurement of the radius of a sphere is 2 %, then the error in the determination of the volume of the sphere...
- If L,C and R represent inductance, capacitance and resistance respectively, then which of the following does NOT represent...
- The percentage errors in the measurement of length and time period of a simple pendulum are 1 % and 2 % respectively. Then the...
- The density of a solid ball is to be determined in an experiment. The diameter of the ball is measured with a screw gauge, whose...
- The speed (v) of ripples on the surface of water depends on surface tension ( ), density ( ) and wavelength ( ). The square of...
- A physical quantity is given by X=M^aL^bT^c. The percentage error in measurement of M,L and T are , and respectively. The maximum...
- The random error in the arithmetic mean of 100 observations is x; then the random error in the arithmetic mean of 400...
- The period of oscillation of a simple pendulum is given by T=2 l/g , where l is about 100 ,cm and is known to have 1 ,mm...
- Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If...
- The mass and volume of a body are found to be 5.00 0.05 ,kg and 1.00 0.05 ,m^3 respectively. Then the maximum possible percentage...
- According to Joule's law of heating, heat produced H=I^2Rt, where I is current, R is resistance and t is time. If the errors in...
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