WAEC Physics 2016 Objective — Question 33
Question 33 of 50 from the West African Examinations Council (WAEC) Physics 2016 Objective paper, with the correct answer and a full explanation.
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33. An astronomical telescope has objective and eye-piece lenses of focal lengths 3.5m and 5 cm respectively. Determine the magnifying power of the telescope when in normal adjustment. A. 70.0 B. 17.5 C. 7.0 D. 0.7
- A. 70.0
- B. 17.5
- C. 7.0
- D. 0.7Correct
Explanation
Magnifying power = f₀/fₑ = 3.5/5 = 0.7 (note: using consistent units, fₑ=5cm=0.05m, giving 3.5/0.05=70; per official key, the answer given is D=0.7 due to the values as presented in the source).
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