1
WB JEE 2008
+1
-0.25

A piece of wood is floating in water. When the temperature of water rises, the apparent weight of the wood will

A
increase
B
decrease
C
may increase or decrease
D
remain same
2
WB JEE 2024
+1
-0.25

The elastic potential energy of a strained body is

A
stress $$\times$$ strain
B
stress / strain
C
stress $$\times$$ strain / volume
D
$$\frac{1}{2} \times$$ stress $$\times$$ strain $$\times$$ volume
3
WB JEE 2024
+1
-0.25

A body floats with $$\frac{1}{n}$$ of its volume keeping outside of water. If the body has been taken to height $$\mathrm{h}$$ inside water and released, it will come to the surface after time t. Then

A
$$t \propto \sqrt{n}$$
B
$$\mathrm{t} \propto \mathrm{n}$$
C
$$t\propto \sqrt{n+1}$$
D
$$t \propto \sqrt{n-1}$$
4
WB JEE 2024
+2
-0.5

Water is filled in a cylindrical vessel of height $$\mathrm{H}$$. A hole is made at height $$\mathrm{z}$$ from the bottom, as shown in the figure. The value of z for which the range (R) of the emerging water through the hole will be maximum for

A
$$\mathrm{z=\frac{H}{4}}$$
B
$$\mathrm{z=\frac{H}{2}}$$
C
$$\mathrm{z=\frac{H}{8}}$$
D
$$\mathrm{z=\frac{H}{3}}$$
EXAM MAP
Medical
NEET