Measurement Of Time

In an experiment to measure the height of a bridge by dropping stone into water underneath, if the error in measurement of time of 0.1 s at the end of 2s, then the error in estimation of height of bridge will be

The energy of a system as a function of time t is given as E(t) = A^(2)exp(-alphat) , alpha = 0.2 s^(-1) . The measurement of A has an error of 1.25% . If the error In the measurement of time is 1.50% , the percentage error in the value of E(t) at t = 5 s is

The displacement of a article starting from rest and moving with constant acceleration is calculated by the formula, s=1/2at^2 . If there occurs an error 10% in the measurement of time, then the error in the calculation of s is:

A voltmeter having resistance of 50 × 10^(3) ohm is used to measure the voltage in a circuit. To increase the range of measurement 3 times the additional series resistance required is

In an experiment to measure the height of bridge by droping stone into water underneath. If the error in measurment of time is 0.2s at the end of 4s, then the error in estimation of height of bridge will be (neglect the water resistance i.e thrust)

The percentage error in measurements of length and time period is 2% and 1% respectively . The percentage error in measurements of 'g' is

In a given system of unit standard measurement of mass is 100 gm standard measurement of length is 200 cm and standard measurement of time is 5 sec 10 J energy in the given system of unit has value N, then value of N is

The percentage errors in the measurement of length and time period of a simple pendulum are 1% and 2% respectively. Then, the maximum error in the measurement of acceleration due to gravity is

Which SI units would you use for the following measurements? the time it takes a swimmer to swim a lap