Waec Physics 2003 Past Questions and Answers

Question 16:

• WAEC 2003

The volume of a given mass of an ideal gas at 327k and 9.52 x 10⁴ Pa is 40cm³. calculate the volume of the gas at 273k and 1.034 x 10⁵Pa.

A. 68.23cm³
B. 47.91cm³
C. 44.60cm³
D. 30.75cm³

Question 17:

• WAEC 2003

A wave of weight length 0.30m travels 900m in 3.0s, calculate its frequency

A. 68.0Hz
B. 225.0Hz
C. 1000Hz
D. 750.0Hz

Question 18:

• WAEC 2003

Which of the following condition is necessary for the occurrence of total internal reflection of light?

A. Light must travel from an optical less dense to a denser medium
B. The angle of incidence must be equal to the critical angle
C. The angle of incidence must be greater than the critical angle
D. The angle of refraction must be 90^o

Question 19:

• WAEC 2003

The image which cannot be formed on a screen is said to be

A. Inverted
B. Erect
C. Real
D. Virtual

Question 20:

• WAEC 2003

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

A. Real and magnified
B. Real and inverted
C. Erect and magnified
D. Erect and virtual