Difficulty of common measure of a value

The number of significant figures in the measured value 4.700 m is the same as that in the value

The number of significant figures in the measured value 0.0204 is

The number of significant figures in the measured value 26000 is

In measuring 'g' using a simple pendulum a student makes a positive error of 1% in length of pendulum and a negative error of 3% in the value of time period. Percentage error in measurement of value of g is

What is the common measurement unit of water potential?

Three rays emanate from a common point and form three angles with measure p, q , r. which one of the measure of anlge q + r ?

If radiation correction is not considered in specific heat measurement. The measured value of If radio specific heat will be

The reading of the ammeter and voltmeters are (Both the instruments are ac meters and measures rms value)-

(A): The order of accuracy of a measurement depends on the least count of the instrument. (R): The smaller the least count, more number of significant figures are in the measured value.