Question

What happens when two waves, such as waves on a lake, come from different directions and run into each other? (a) They cancel each other out and disappear. (b) If they are the same size, they cancel each other out and disappear. If one wave is larger than the other, the smaller one disappears and the larger one shrinks but continues. (c) They get larger where they run into each other; then they continue in a direction between the direction of the two original waves and larger than either original wave. (d) They may have various patterns where they overlap, but each wave continues with its original pattern away from the region of overlap. A simple pendulum oscillates with period T on Earth. If the whole setup is taken to the Moon, how does the period change? A) period will increase B) period will not change C) period will decrease

Answer 1

(1) Ans(d)

When two waves, such as waves on a lake, come from different directions and run into each other, They may have the various patterns where they overlap, but each wave continues with its original pattern away from the region of overlap.

(2) Ans(A)

  A simple pendulum oscillates with period T on Earth. If the whole setup is taken to the Moon, The period will increase due to the acceleration due to gravity on the moon is smaller than on the earth.