Question bank/JEE Main/Physics

A leak proof cylinder of length 1 m, made of a metal which has
very low coefficient of expansion is floating vertically in water at 0°C
such that its height above the water surface is 20 cm. When the
temperature of water is increased to 4°C, the height of the cylinder
above the water surface becomes 21 cm. The density of water at T = 4°C,
relative to the density at T = 0°C is close to

A1.03B1.04C1.26D1.01

Show answer and solution▾

$mg = A(79)\rho_{4^{\circ}C}g$
$\frac{\rho_{4^{\circ}C}}{\rho_{0^{\circ}C}} = \frac{80}{79} = 1.01$

Source: Grass-G / P-24 Physcis Paper 31 Dec.docx