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JAMB UTME Physics 2005 past questions and answers

This 2005 JAMB UTME Physics set has 40 practice questions. Try these 5 free sample questions, tap a question to reveal the answer and explanation. Then practise the whole 2005 set with instant marking.

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Sample JAMB UTME Physics 2005 questions

1. A sound wave travels through air at 340 m/s and has a frequency of 680 Hz. What is its wavelength?
  1. 0.25 m
  2. 4.0 m
  3. 2.0 m
  4. 0.50 m

Answer: D. 0.50 m

The wavelength is v/f = 340/680 = 0.50 m.

2. A source makes 18 complete oscillations in 6 s. What is the period of its motion?
  1. 3.0 s
  2. 2.0 s
  3. 0.33 s
  4. 108 s

Answer: A. 3.0 s

The frequency is 18/6 = 3 Hz, so the period is 1/3 s, approximately 0.33 s.

3. An echo is heard 0.8 s after a shout. If the speed of sound is 330 m/s, how far away is the reflecting wall?
  1. 66 m
  2. 412.5 m
  3. 264 m
  4. 132 m

Answer: D. 132 m

The sound covers the distance twice, so the wall is 330 x 0.8/2 = 132 m away.

4. Which change will increase the loudness of a musical note without changing its pitch?
  1. Decrease the wave speed only
  2. Increase the wave frequency
  3. Increase the wave amplitude
  4. Decrease the source's vibration period

Answer: C. Increase the wave amplitude

Loudness depends mainly on wave amplitude, whereas pitch depends on frequency.

5. A note of frequency 256 Hz is sounded with a note of 260 Hz. What beat frequency is heard?
  1. 2 Hz
  2. 4 Hz
  3. 256 Hz
  4. 516 Hz

Answer: B. 4 Hz

The beat frequency is the difference between the two frequencies, 260 - 256 = 4 Hz.

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