List of top Physics Questions on Mechanics asked in KEAM

Bernoulli's principle is applicable to
Water flows through a horizontal pipe of diameter \(2\) cm at speed of \(3\ \text{cm s}^{-1}\). The pipe has a nozzle of diameter \(0.5\) cm at its end. The speed of water emerging from the nozzle is
A boy formed a bubble and a liquid drop from the same soapy water. The pressure difference between inside and outside of the soap bubble is measured to be 100 N/m\(^2\). If the radius of the droplet is half of the radius of the bubble, then the pressure difference between the inside and outside of the droplet is:
In a water container, an aluminum piece of volume \( 0.5 \,\text{m}^3 \) is lowered through an external force, until it is completely submerged. In another identical water container, a lead piece of same volume was similarly submerged using the same amount of external force. The mass density of lead is 4 times larger than the mass density of the aluminum. If \( F_A \) and \( F_L \) are the buoyancy forces acting on aluminum and lead respectively, then which of the following statement is correct?
A capillary tube of radius $0.5$ mm is immersed in a beaker of mercury. The level inside the tube is $0.8$ cm below the resonance and angle of contact is $120^\circ$. What is the surface tension of mercury if the mass density of mercury is $\rho = 13.6 \times 10^3$ kgm$^{-3}$ and acceleration due to gravity is $g = 10$ m/s$^2$?}
If a capillary tube of radius $r$ is immersed in a liquid, the liquid rises to a height $h$. The corresponding mass of liquid column is $m$. The mass of water that would rise in another capillary tube of twice the radius is
In a horizontal pipe of non-uniform cross-section, water flows with a velocity of \( 1 \text{ m s}^{-1} \) at a point where the diameter of the pipe is 20 cm. The velocity of water (in m s\(^{-1}\)) at a point where the diameter of the pipe is 5 cm is
A stone of density \( 2000 \, \text{kg m}^{-3} \) completely immersed in a lake is allowed to sink from rest. If the effect of friction is neglected, then after 4 seconds, the stone will reach a depth of
The total energy of an artificial satellite of mass \(m\) revolving in a circular orbit around the earth with a speed \(v\) is
The total energy of an artificial satellite of mass \(m\) revolving in a circular orbit around the earth with a speed \(v\) is
The total energy of an artificial satellite of mass \(m\) revolving in a circular orbit around the earth with a speed \(v\) is