Waec Physics 1995 Past Questions and Answers

Question 26:

• WAEC 1995

Which of the following is not self-luminous?

A. Incandescent electric bulb
B. Incandescent fluorescent tube
C. Lighted candle
D. The moon
E. The sun

Question 27:

• WAEC 1995

An object is placed on the principal axis at the centre of curvature of a concave mirror. The image of the object formed by the mirror is

A. Real, inverted and magnified
B. At the principal focus
C. Real and diminished
D. Erect and virtual
E. At the centre of curvature

Question 28:

• WAEC 1995

A wire is stretched between two points, 1m apart. If the speed of the wave generated on plucking the wire is 200ms^-1, what is the minimum frequency which will resonate with the wire?

A. 50 Hz
B. 75 Hz
C. 100 Hz
D. 150 Hz
E. 200 Hz

Question 29:

• WAEC 1995

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

Question 30:

• WAEC 1995

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.