Answer:
average velocity = displacement/time
<span>C. A concave lens can only form a virtual image, because they are thinner in the middle and thicker around the edges.</span>
Answer:
option (D
Explanation:
Torque is given by
torque = N x i x A x B x sinФ
where, N is number of turns, A is area, b is the magnetic field and Ф be the angle between the area vector and the magnetic field vector, i be the current.
So, torque depends on the current.
option (D)
