Answer:4
Explanation:
Given


Mass of stick is 
Let T be the tension in the red string
Now if the red string is cut , suppose T is the tension in the blue rod immediately after cut
Therefore



Answer:
D. Perfectly inelastic
Explanation:
Kinetic energy is lost so the two bodies stick together.
Answer: velocity has a direction, while speed is the distance travelled by an object.
Explanation:
Answer:
Explanation:
Convergent lens is the lens which converges the rays of light falling on it. It is thicker at the middle and thinner at the edges. It is also known as convex lens.
Divergent lens is the lens which diverge the rays of light falling on it. It is thinner at the middle and thicker at the edges. It is also called as concave lens.