Experimental Physics

Which of the following measurements require 'index correction' ?

A student in the laboratory measures thickness of a wire using screw gauge. The readings are $1.22\mathrm{mm},1.23\mathrm{mm},1.19\mathrm{mm}$ and $1.20\mathrm{mm}$. The percentage error is $\frac{x}{121}%$. The value…

Diameter of a steel ball is measured using a Vernier calipers which has divisions of 0.1 cm on its main scale (MS) and 10 divisions of its Vernier scale (VS) match 9 divisions on the main scale. Three such measurements…

When two resistance $R_{1}$ and $R_{2}$ connected in series and introduced into the left gap of a meter bridge and a resistance of $10\Omega\,$ is introduced into the right gap, a null point is found at $60\mathrm{cm}$…

In a screw gauge the zero of main scale reference line coincides with the fifth division of the circular scale when two studs are in contact. There are $100$ divisions in circular scale and pitch of screw gauge is $0.1$…

When both jaws of vernier callipers touch each other, zero mark of the vernier scale is right to zero mark of main scale, $4^{\text {th }}$ mark on vernier scale coincides with certain mark on the main scale. While…

The measured value of the length of a simple pendulum is$20cm$with$2mm$accuracy. The time for$50$oscillations was measured to be$40$seconds with$1$second resolution. From these measurements, the accuracy in the…

If$50$Vernier divisions are equal to$49$main scale divisions of a travelling microscope and one smallest reading of main scale is$0.5mm$the Vernier constant of travelling microscope is:

Given below are two statements: one is labelled as Assertion(A) and the other is labelled as Reason (R). Assertion (A): In Vernier calliper if positive zero error exists, then while taking measurements, the reading…

There are 100 divisions on the circular scale of a screw gauge of pitch $1 \mathrm{~mm}$. With no measuring quantity in between the jaws, the zero of the circular scale lies 5 divisions below the reference line. The…

The vernier scale used for measurement has a positive zero error of$0.2mm.$ If while taking a measurement it was noted that$0$on the vernier scale lies between$8.5cm$and$8.6cm$. Vernier coincidence is$6,$then the…

A screw gauge has 50 divisions on its circular scale. The circular scale is 4 units ahead of the pitch scale marking, prior to use. Upon one complete rotation of the circular scale, a displacement of$0.5mm$ is noticed…