Waec Physics Past Questions For Year 1995
Question 26
A ray of light is incident on a body x as shown in the diagram above. What is the refractive index of the body?
- A. 1.63
- B. 1.50
- C. 1.49
- D. 1.33
- E. 1.02
Question 27
A sound note of frequency 250 Hz and wavelength 1.3m is produced at a point near a hill. If the echo of the sound is received 1 second later at the point, how far away is the hill from the point?
- A. 131.3m
- B. 162.5m
- C. 248.7m
- D. 251.3m
- E. 325.0m.
Question 28
Which of the following wave characteristics can be used to distinguish a transverse wave from a longitudinal wave?
- A. Reflection
- B. Refraction
- C. Diffraction
- D. Polarization
- E. Interference
Question 29
Which of the following media allow(s) the transmission of sound wave through them? I. Air II. Liquid III. Solid.
- A. I only
- B. II only
- C. III only
- D. I and II only
- E. I, II and III.
Question 30
Sixty complete waves pass a particular point in 4s. lf the distance between three successive troughs of the waves is 15m, calculate the speed of the waves,
- A. 300.0ms-1
- B. 225.0ms-1
- C. 112.5ms-1
- D. 75.0ms-1
- E. 16.0ms-1
