WAEC Physics 2014 Objective — Question 32
Question 32 of 50 from the West African Examinations Council (WAEC) Physics 2014 Objective paper, with the correct answer and a full explanation.
Advertisement
An observer hears an echo 1.26 seconds after blowing a whistle near a cliff. Calculate the distance of the observer from the cliff. [Speed of sound in air = 330 ms⁻¹]
- A. 104.0 m
- B. 207.9 mCorrect
- C. 415.8 m
- D. 523.8 m
Explanation
Distance = (speed × time)/2 = (330×1.26)/2 = 207.9m.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.