Experimental Physics

In a metre bridge experiment the balance point is obtained if the gaps are closed by $2\Omega\,$and $3\Omega\,$. A shunt of $X\Omega\,$ is added to $3\Omega\,$ resistor to shift the balancing point by $22.5\mathrm{cm}$.…

In an experiment to find out the diameter of wire using screw gauge, the following observation were noted: (a) Screw moves $0.5 \mathrm{mm}$ on main scale in one complete rotation (b) Total divisions on circular scale…

In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure. S. No. $R\left(\Omega\,\right)$ $l\left(cm\right)$ 1. 2. 3. 4. $1000$ $100$ $10$ $1$ $60$ $13$ $1.5$ $1.0$…

A tiny metallic rectangular sheet has length and breadth of 5 mm and 2.5 mm , respectively. Using a specially designed screw gauge which has pitch of 0.75 mm and 15 divisions in the circular scale, you are asked to find…

A potentiometer wire $\mathrm{AB}$ having length $L$ and resistance $12r$ is joined to a cell $D$ of emf $\epsilon\,$ and internal resistance $r$. Acell $C$ having EMF$\epsilon\,/2$ and internal resistance $3r$ is…

Student $A$ and student $B$ used two screw gauges of equal pitch and $100$ equal circular divisions to measure the radius of a given wire. The actual value of the radius of the wire is $0.322\mathrm{cm}$. The absolute…

The one division of main scale of vernier callipers reads $1\mathrm{mm}$ and $10$ divisions of Vernier scale is equal to the $9$ divisions on main scale. When the two jaws of the instrument touch each other the zero of…

A travelling microscope is used to determine the refractive index of a glass slab. If 40 divisions are there in $1\mathrm{cm}$ on main scale and $50$ Vernier scale divisions are equal to $49$ main scale divisions, then…

The least count of a screw guage is 0.01 mm . If the pitch is increased by $75 \%$ and number of divisions on the circular scale is reduced by $50 \%$, the new least count will be _____ $\times 10^{-3} \mathrm{~mm}$

The diameter of a spherical bob is measured using a vernier callipers. $9$ divisions of the main scale, in the vernier callipers, are equal to $10$ divisions of vernier scale. One main scale division is…

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…