Physics Test - ...

Which of the following is a scalar quantity

SI unit of coefficient of viscosity is:

Two masses m₁ = 10kg and m₂ = 5kg are connected by an ideal string as shown in the figure.

The coefficient of friction between m₁ and the surface is μ = 0.2. Assuming that the system is released from rest. The velocity of blocks when m₂ has descended by 4m is (g = 10m/s²)

A projectile shot at an angle of 45^o above the horizontal strikes the wall of a building 30m away at a point 15m above the point of projection. Initial velocity of the projectile is

(take g=9.8m/s²)

The velocity of a particle depends upon as v = a + bt +$c{t}^2$; if the velocity is in m/sec, the unit of a will be

A car starting from a point travels towards east with a velocity of 36 kmph. Another car starting from the same point travels towards north with a velocity of 24 kmph. The magnitude of relative velocity of one with respect to another is

A small sphere of mass m is attached to a spring of spring factor k and normal length l. If the sphere rotates with radius r at frequency v then tension in the spring is :

A body moving in a circular path with a constant speed has a ___

The following motion is based on the law of conservation of angular momentum

A) rotation of top

B) diving of a diver

C) rotation of ballet dancer on smooth horizontal surface

D) a solid sphere that rolls down on an inclined plane

Identify the wrong statement: