The diameter of a rod as measured by a screw gauge of pitch 0.5 mm is 8.3 mm . The pitch scale reading is `"______"`

The radius of a ball bearing measured by a screw gauge is 3.75mm . The pitch of the screw is 1mm and it has 100 divisions on its head scale. The percentage error in the volume of the ball bearing which is perfectly spherical by shape is

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 pitch is 0.5mm and there are 50 divisions on the circular scale. The reading on the main scale is 2.5mm and that on circular scale is 20 divisions. if the measured mass of the ball has a relative error of 2% , the relative percentage error in the density is

A student measued the diameter of a small steel ball using a screw gauge of least count 1.001 cm . The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero erroof -0.004 cm , the correct diameter of the ball is

The diameter of a wire is measured with a screw gauge having least count 0.01 mm . Out of the following the one which correctly expresses its diameter is

The diameter of a wire is measured by using a screw gauge having least count 0.01mm . If the diameter is found to be 0.20mm , then the error in the cross-section of the wire will be