Physicsmedium · Past Paper
What is the frequency of a wave with a time period of 0.05 seconds?
A5 Hz
B20 Hz
C50 Hz
D200 Hz
✓ Correct Answer: B — 20 Hz
f = 1 / T = 1 / 0.05 = 20 Hz.
Share this question
More from Physics
- A machine of efficiency 80% is used to lift a 100 N load through 2 m. The work input is:
- Two copper wires A and B have lengths in ratio 1:2 and radii in ratio 2:1. The ratio of their resistances is:
- An object is thrown upwards. At the highest point, its velocity is:
- Two bodies of masses 1 kg and 5 kg are dropped from the same height in vacuum. Which reaches the ground first?
- If a current of 1A flows through a conductor for 1 hour, what is the total charge that passes through a cross-section?