Experimental Physics

The circular divisions of shown screw gauge are 50 . It moves 0.5 mm on main scale in one rotation. The diameter of the ball is

The length of the second's pendulum is decreased by 0.3 cm when it is shifted to Chennai from London. If the acceleration due to gravity at London is $981 \mathrm{~cm} / \mathrm{s}^2$, the acceleration due to gravity at…

In the measurement of resistance of a wire using Ohm's law, the plot between $V$ and $I$ is drawn as shown, then resistance of given wire will be

A convex lens forms inverted image of a real object on a fixed screen. The size of image is $9 \mathrm{cm}$. When lens is displaced $40 \mathrm{cm}$ along principle axis it again forms a real image of size $4…

The figure shown below is a screwgauge. When the circular scale division matches the main scale at 43, the$6.5\operatorname{m}\,m$mark on the main scale is just visible. Themain scale has…

Let the end error on the LHS and RHS be equal to 1 cm. For the balance point at O, find out the % error in the value of X? (If the end error is 1 cm from both sides then it means the correct reading will become 10 cm +…

Graph of position of image vs position of a point object from a convex lens is shown in the figure. The focal length of the lens is -

In an experiment to determine the resistance of a galvanometer by half deflection method, the circuit shown is used. In one set of readings, if $R=10\text{\Omega}$and$S =4\text{\Omega}$, then the resistance of the…

Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively and resistance $8\mathrm{}\mathrm{\Omega}$ each. They are connected in parallel with a cell of emf 4 V and negligible internal…

A professor reads a greeting card received on his 50th birthday with + 2.5 D glasses keeping the card 25 cm away. Ten years letter, he reads his farewell letter with the same glasses but he has to keep the letter 50 cm…

In a meter Bridge experiment resistance $x$ is connected in the right gap. When $R_{1}$ and $R_{2}$ are connected in the left gap separately the balance points are $40\mathrm{}cm$ and $50\mathrm{}cm$ respectively from…

The distance advanced by the screw of a screw gauge is $2mm$ in$4$ rotations. Its cap is divided into $50$ divisions. There is no zero error. If the screw reads $3$ divisions on the main scale and $32$ divisions on the…