A spherometer has a least count of 0.05 mm and its circular scale is divided into 200 equal divisions. The distance between consecutive threads on the spherometer screw is

A vernier caliper has its main scale of 10 cm equally divided into 200 equal parts. Its vernier scale of 25 divisions coincides with 12 mm on the main scale. The least count of the instrument is

The pitch of a screw gauge is 0.5 mm. Its head scale contains 50 divisions. The least count of the screw gauge is

In an experiment the value of refractive index of glass was found to be 1.54, 1.53, 1.44, 1.54, 1.56 and 1.45 in successive measurements. The absolute error is

The side of a cube is measured by venier caliper (10 divisions of a vernier scale coincides with 9 divisions of main scale, where 1 division of main scale is 1 mm). The main scales reads 10 mm and first division of vernier scale coincides with the main scale. The side of the cube is

The heat generated in a circuit is dependent upon the resistance, current and time for which the current is flown. If the errors in measuring the above are as 1%, 2% and 1% respectively, the maximum error in measuring heat will be

The length of a cylinder is measured with a metre rod having least count 0.1 cm. Its diameter is measured with vernier calipers having least count 0.01 cm. Given that length is 5.0 cm and radius is 2.0 cm. The percentage error in the calculated value of the volume will be:

Which of the options has two quantities that have different dimensions

CGS unit of coefficient of viscosity is poise. If one poise is equal to x in a system of units in which unit of mass is 2 kg, unit of length 2m and that of time 4sec, x is equal to

In a resonance tube experiment, a tuning fork of frequency 512 Hz is found to be in resonance with 30.7 cm length of water column. The next resonance is obtained at 63.2 cm of water column. Maximum error in estimation of velocity of sound is

Lux is the unit of

Which of the following is not the unit of time