The boys are communicating with each other by stretching a string passing through a hole punched in the bottom of each of two tin cans. The physical principle employed is that sound travels
A
mainly through air
B
fainter in stretched string
C
faster through gases than in solids and liquids
D
with greater ease through a string than in air
E
none of the above is correct
Verified Correct Answer: D.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #29310)