These question consists of two statements each printed as assertion and reason. While answering these question you are required to choose any one of the following five responses.

Assertion: Small water drops are spherical while bigger water drops are not.

Reason: In small water drops surface tension forces dominate while in bigger water drops gravity forces dominate.

This question consists of two statements each printed as assertion and reason. While answering these question you are required to choose any one of the following five responses.

Assertion: Bulk modulus of an ideal fluid is infinite

Reason: An ideal fluid is incompressible

These question consists of two statements each printed as assertion and reason. While answering these question you are required to choose any one of the following five responses.

Assertion: Deep inside a liquid density is more than the density on the surface.

Reason: Density of liquid increases with increase in depth.

These question consists of two statements each printed as assertion and reason. While answering these question you are required to choose any one of the following five responses.

Assertion: A solid is floating in a liquid of density ${\rho }_1$. When the solid melts its density becomes ${\rho }_2$ in liquid state. If ${\rho }_1>{\rho }_2$ level of liquids will increase after melting.

Reason: In liquid state volume always increases after a solid melts.

This question consists of two statements each printed as assertion and reason. While answering these question you are required to choose any one of the following five responses.

Assertion: Mass of solid floating in liquid is $m_1$ and mass of liquid is $m_2.$ Base area is $A$. Then pressure at bottom is $p_0+\frac{\left(m_1+m_2\right)g}{A}$.

Reason: Upward force on liquid from base of vessel is $pA,$ where $p$ is pressure at bottom.

There is a circular tube in a vertical plane. Two liquids which do not mix and of densities $d_1$ and $d_2$ are filled in the tube. Each liquid subtends $90°$angle at centre. Radius joining their interface makes an angle $\alpha$ with vertical. Ratio $\frac{d_1}{d_2}$ is

On heating water, bubbles beings formed at the bottom of the vessel detach and rise. Take the bubbles to be spheres of radius $R$ and making a circular contact of radius $r$ with the bottom of the vessel. If $r<<R$ and the surface tension of water is $T$, value of $r$ just before bubbles detach is (density of water is $\rho$)