1
JEE Main 2024 (Online) 30th January Morning Shift
+4
-1

Young's modules of material of a wire of length '$$L$$' and cross-sectional area $$A$$ is $$Y$$. If the length of the wire is doubled and cross-sectional area is halved then Young's modules will be :

A
4 Y
B
2 Y
C
$$\mathrm{\frac{Y}{4}}$$
D
Y
2
JEE Main 2024 (Online) 29th January Evening Shift
+4
-1

A small liquid drop of radius $$R$$ is divided into 27 identical liquid drops. If the surface tension is $$T$$, then the work done in the process will be:

A
$$4 \pi \mathrm{R}^2 \mathrm{~T}$$
B
$$8 \pi R^2 \mathrm{~T}$$
C
$$\frac{1}{8} \pi R^2 T$$
D
$$3 \pi R^2 \mathrm{~T}$$
3
JEE Main 2024 (Online) 29th January Evening Shift
+4
-1

A wire of length $$L$$ and radius $$r$$ is clamped at one end. If its other end is pulled by a force $$F$$, its length increases by $$l$$. If the radius of the wire and the applied force both are reduced to half of their original values keeping original length constant, the increase in length will become:

A
2 times
B
4 times
C
3 times
D
$$\frac{3}{2}$$ times
4
JEE Main 2024 (Online) 29th January Morning Shift
+4
-1

Given below are two statements:

Statement I : If a capillary tube is immersed first in cold water and then in hot water, the height of capillary rise will be smaller in hot water.

Statement II : If a capillary tube is immersed first in cold water and then in hot water, the height of capillary rise will be smaller in cold water.

In the light of the above statements, choose the most appropriate from the options given below

A
Both Statement I and Statement II are false
B
Both Statement I and Statement II are true
C
Statement I is true but Statement II is false
D
Statement I is false but Statement II is true
EXAM MAP
Medical
NEET