In a screw gauge when | Measurement & Error | JEE MAIN_2026

Competishun Header

JEE MAIN_2026

04-04-26_S2

Question

In a screw gauge when the circular scale is given five complete rotations it moves linearly by 2.5 mm. If the circular scale has 100 divisions, the least count of screw gauge is ____ mm.

Select the correct option:

A

$1 \times 10^{-2}$

B

$1 \times 10^{-3}$

C

$5 \times 10^{-2}$

D

$5 \times 10^{-3}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

$\begin{aligned} & \text { Pitch } \Rightarrow \frac{2.5 \mathrm{~mm}}{5}=0.5 \mathrm{~mm}=5 \times 10^{-4} \mathrm{~m} \\ & \text { L.C. } \Rightarrow \frac{\text { Pitch }}{\text { No. of divisions }}=\frac{5 \times 10^{-4}}{100} \mathrm{~m} \\ & =5 \times 10^{-6} \mathrm{~m} \\ & =5 \times 10^{-3} \mathrm{~mm}\end{aligned}$

Question Tags

JEE Main

Physics

Easy

Start Preparing for JEE with Competishun

Filters 0

Showing 18 questions

A solid sphere of mass $M$ and radius $R$ is divided into two unequal parts. The smaller part having mass...

JEE MainPhysicsHard

View Solution→

Two nuclei of mass number 3 combine with another nucleus of mass number 4 to yield a nucleus of mass...

JEE MainPhysicsEasy

View Solution→

The time taken by a block of mass $m$ to slide down from the highest point to the lowest point...

JEE MainPhysicsMedium

View Solution→

The increase in the pressure required to decrease the volume $(\Delta \mathrm{V})$ of water is $...

JEE MainPhysicsEasy

View Solution→

In a screw gauge when the circular scale is given five complete rotations it moves linearly by 2.5 mm. If...

JEE MainPhysicsEasy

View Solution→

Moment of inertia about an axis A B for a rod of mass 40 kg and length 3 m is...

JEE MainPhysicsMedium

View Solution→

If sunlight is focused on a paper using convex lens, it starts burning the paper in shortest time when the...

JEE MainPhysicsEasy

View Solution→

5 moles of unknown gas is heated at constant volume from $10^{\circ} \mathrm{C}$ to $20^{\circ} \mathrm{C}$. The molar specific heat...

JEE MainPhysicsEasy

View Solution→

Using Bohr's model, calculate the ratio of the magnetic fields generated due to the motion of the electrons in the...

JEE MainPhysicsMedium

View Solution→

In a Young's double slit experiment, the intensity at some point on the screen is found to be $\frac{3}{4}$ times...

JEE MainPhysicsEasy

View Solution→

The equation of motion of a particle is given by $x=a \sin (50 t+\pi / 3) \mathrm{cm}$. The particle will...

JEE MainPhysicsEasy

View Solution→

The binding energy per nucleon of ${ }_{83}^{209} \mathrm{Bi}$ is $\_\_\_\_$ MeV . [Take $...

JEE MainPhysicsMedium

View Solution→

A circular current loop of radius $R$ is placed inside square loop of side length $L(L ? R)$ such that...

JEE MainPhysicsMedium

View Solution→

The figure given below shows an LCR series circuit with two switches $S_1$ and $S_2$. When switch $S_1$ is closed...

JEE MainPhysicsHard

View Solution→

One side of an equilateral prism is painted by a transparent material of refractive index $n_2$. The refractive index of...

JEE MainPhysicsEasy

View Solution→

Two point charges $8 \mu \mathrm{C}$ and $-2 \mu \mathrm{C}$ are located at $x=2 \mathrm{~cm}$ and $x=4 \mathrm{~cm}$, respectively on...

JEE MainPhysicsEasy

View Solution→

Two metal plates $(A, B)$ are kept horizontally with separation of $\left(\frac{12}{\pi}\right) \mathrm{cm}$, with plate $A$ on the top. An...

JEE MainPhysicsMedium

View Solution→

Two resistors of $200 \Omega$ and $400 \Omega$ are connected in series with a battery of 100 V . A...

JEE MainPhysicsEasy

View Solution→