1995 - WAEC Physics Past Questions and Answers - page 3
21
A ray of light is incident on mirror m1 and after reflection is incident on mirror m2 as shown in the diagram, calculate the angle of reflection of the ray at mirror m2
A
120o
B
90o
C
60o
D
45o
correct option: e
Users' Answers & Comments22
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
correct option: a
Users' Answers & Comments23
Light travels in straight lines. In which of the following is this principle manifested? I. Pinhole camera II Formation of shadows III. Diffraction of light IV. Occurrence of eclipse
A
I and III only
B
II and III only
C
I, II and III only
D
I, II and IV only
correct option: e
Users' Answers & Comments24
The image of any real object formed by a diverging lens is always
A
inverted
B
magnified
C
erect
D
real
correct option: c
The images formed by a diverging lens is a virtual and erect image.
25
Which of the following is not self-luminous?
A
Incandescent electric bulb
B
Incandescent fluorescent tube
C
Lighted candle
D
The moon
correct option: d
Users' Answers & Comments26
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
correct option: e
Users' Answers & Comments27
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
correct option: e
Users' Answers & Comments28
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
correct option: c
Users' Answers & Comments29
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
correct option: e
Users' Answers & Comments30
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
correct option: d
Users' Answers & Comments