Centre of Mass | JEE Main 2025 Solution | Circular Disc

Competishun Header

JEE MAIN 2025

23-01-2025 SHIFT-1

Question

Consider a circular disc of radius 20 cm with centre located at the origin. A circular hole of radius 5 cm is cut from this disc in such a way that the edge of the hole touches the edge of the disc. The distance of centre of mass of residual or remaining disc from the origin will be-

Select the correct option:

A

2.0 cm

B

1.5 cm

C

1.0 cm

D

0.5 cm

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Physics

Medium

Start Preparing for JEE with Competishun

Video Solution

BY competishun

Watch Solution

YouTube

Filters 0

Showing 18 questions

QJEE Advance 20202020

Shown in the figure is a semicircular metallic strip that has thickness $t$ and resistivity $\rho$. Its inner radius is...

JEE AdvancePhysicsEasy

View Solution→

QJEE Advance 20202020

A uniform electric field, $\vec{E}=-400 \sqrt{3} \hat{y} \mathrm{NC}^{-1}$ is applied in a region. A charged particle of mass m carrying...

JEE AdvancePhysicsEasy

View Solution→

QJEE Advance 20202020

Sometimes it is convenient to construct a system of units so that all quantities can be expressed in terms of...

JEE AdvancePhysicsEasy

View Solution→

QJEE Advance 20202020

The filament of a light bulb has surface area $64 \mathrm{~mm}^2$. The filament can be considered as a black body...

JEE AdvancePhysicsEasy

View Solution→

QJEE Advance 20202020

A particle of mass m moves in circular orbits with potential energy $\mathrm{V}(\mathrm{r})=F r$, where F is a positive constant...

JEE AdvancePhysicsEasy

View Solution→

QJEE Advance 20202020

An open-ended U-tube of uniform cross-sectional area contains water (density $10^3 \mathrm{~kg} \mathrm{~m}^{-3}$ ). Initially the water level stands at...

JEE AdvancePhysicsEasy

View Solution→

QJEE Advance2018

For every twice differentiable function $f: R \rightarrow[-2,2]$ with $(f(0))^2+\left(f^{\prime}(0)\right)^2=85$, which of the following statement(s) is (are) TRUE ?

JEE AdvanceMathematicsEasy

View Solution→

QJEE Advance 20202020

A parallel beam of light strikes a piece of transparent glass having cross section as shown in the figure below....

JEE AdvancePhysicsEasy

View Solution→

QJEE Advance 20202020

Therefore relative displacement (with respect to centre of roller) is $(75-50) \mathrm{cm}=25 \mathrm{~cm}$. A circular coil of radius R and...

JEE AdvancePhysicsEasy

View Solution→

QJEE Advance 2020 2020

A small roller of diameter 20 cm has an axle of diameter 10 cm (see figure below on the left)....

JEE AdvancePhysicsEasy

View Solution→

QJEE Advance2021

The pair(s) of complexes wherein both exhibit tetrahedral geometry is(are) (Note: py = pyridine Given: Atomic numbers of $...

JEE AdvanceChemistryEasy

View Solution→

QJEE Advance 20202020

A light disc made of aluminium (a nonmagnetic material) is kept horizontally and is free to rotate about its axis...

JEE AdvancePhysicsEasy

View Solution→

QJEE Advance 20202020

A football of radius R is kept on a hole of radius $\mathrm{r}(r < R)$ made on a plank kept...

JEE AdvancePhysicsEasy

View Solution→

QJEE Advanced 20162016

Football teams T1 and T2 have to play two games against each other. It is assumed that the outcomes of...

JEE AdvanceMathematicsEasy

View Solution→

QJEE Advanced 20162016

Football teams $T_1$ and $T_2$ have to play two games against each other. It is assumed that the outcomes of...

JEE AdvanceMathematicsEasy

View Solution→

QJEE Advance 20202020

A solution of 0.1 M weak base (B) is titrated with 0.1 M of a strong acid (HA). The variation...

JEE AdvanceChemistryEasy

View Solution→

QJEE Advanced 20202020

Choose the correct statement(s) among the following :

JEE AdvanceChemistryEasy

View Solution→

QJEE Advance 20082008

Match the compounds in Column I with their characteristic test(s)/reactions(s) given in Column II. Indicate your answer by darkening the...

JEE AdvanceChemistryEasy

View Solution→