When parallel light rays comes across a concave lens, the rays are refracted outwards. Concave lenses are thinner in the middle part. Parallel light rays diverge and seems to appear from one point called the principal focus. The image formed is smaller.
Answer:
well, in my view,
In fluid mechanics, hydrostatic equilibrium or hydrostatic balance (also known as hydrostasy) is the condition of a fluid or plastic solid at rest. This occurs when external forces such as gravity are balanced by a pressure-gradient force.
We start from the definition of Torque,

Where ,
I = moment of inertia
Angular acceleration.
The torque given in the problem is 1.96mN.
We look for the moment of inertia of a solid cylinder,

Where m is the mass of 4Kg and R the radius 0.035m


Replacing,

A) With angular acceleration we can find the number of revolutions, the given equation would be,




B) We apply the rotational dynamics formula and we can find the time,




<span>It will increase until it reaches its maximum.
</span>
The correct answer would be A) Auroas
Hope this helps ya!