Physicshard · Past Paper
At a constant temperature, what is the ratio of speed of sound in Oxygen to that in Hydrogen? (Molecular mass O2=32, H2=2)
A4:1
B1:4
C16:1
D1:16
✓ Correct Answer: B — 1:4
Speed v ∝ 1/sqrt(M). v(O)/v(H) = sqrt(M(H)/M(O)) = sqrt(2/32) = sqrt(1/16) = 1/4.
Share this question
More from Physics
- What is the formula for calculating gravitational potential energy?
- A car moving at 20 m/s comes to rest in 5s after applying brakes. The retardation is:
- If acceleration is constant and non-zero, the velocity-time graph is:
- What is the function of a commutator in a DC motor?
- A body dropped from height 'h' reaches the ground with velocity 'v'. If dropped from '4h', it reaches with: