Non-uniform Circular Motion

Body M and N are hung on two spring balance. The reading of the spring balances are as in the figure

Which of following statements are absolutely correct?

$1$. M's weight is smaller than N.

$2.$ M and N cannot be weighed together with the same spring balance

$3.$ The density of M is smaller than that of N

An object is released in a frictional path as shown in the figure.

How many forces are affected by the object from
A to B?

in figure I and II, forces parallel to the plane act on bodies X and Y, which are of frictionless horizontal plane.

 Accordingly, what can be said about the resultant ${\mathrm{R}}_{\mathrm{x}}, {\mathrm{R}}_{\mathrm{y}}$forces  acting on the objects?

$\mathrm{The} \mathrm{fraction} \mathrm{of} \mathrm{floating} \mathrm{body} \mathrm{of} \mathrm{volume} {\mathrm{V}}_0 \mathrm{and} \mathrm{density} {\mathrm{d}}_0 \mathrm{above} \mathrm{the} \mathrm{surface} \mathrm{of} \mathrm{liquid} \mathrm{of} \mathrm{density} \mathrm{d} \mathrm{will} \mathrm{be}$?

If the thermal capacity of a body is, infinity then

If $10$g of ice at $0°$C mixes with $10$g of water at $10°$C, then the final temperature t is given by

A graph is plotted taking $°$C along the Y-axis and $°$F along the X-axis. It is a/an

A thermometer is used to measure 

Choose the correct statement:

The Coefficient of linear expansion always                      with the increase in temperature.

The block of wood is floating on water at $0°$C, with a certain volume V above water level. The temperature of the water is slowly raised from $0°$. How will volume V change with the rise in temperature?

Water evaporates under atmospheric pressure. without changing the temperature, the same water is placed in a partial vacuum. The rate of evaporation will

Two spheres of the same size are made of the same metal, but one is hollow and the other is solid. They are heated to the same temperature. Then,

Cotyledons are also called-