Question

30. When a troop crosses a suspension bridge, the
soldiers are asked to break their steps. Why?
31. Why are stringed instruments like guitar provided
with a hollow sound box ?
32. How do you tune your radio set to a particular
station ? Name the phenomenon involved in doing
so and define it.​

Answer 1

Answer:

it is because it gave way to soldiers

Answer 2

Answer:

hi bro have a nice day

Explanation:

Good morning bro