Waec Physics 2002 Past Questions and Answers

Question 26:

• WAEC 2002

A radio wave has a wavelength of 150m. If the velocity of radio waves is free spaces is 3 x 10\(^8\) ms\(^{-1}\), calculate the frequency of the radio wave

A. 4.50 x 10¹⁰Hz
B. 5.0 x 10⁹Hz
C. 4.5 x 10⁹Hz
D. 2.0 x 10⁶Hz

Question 27:

• WAEC 2002

In the wave equation y = E_o, sin(299t - \(\pi\)), E_o represents the

A. Amplitude
B. Frequency
C. Period
D. Wavelength

Question 28:

• WAEC 2002

The size of the hole of a pin hole camera is increased. The resultant image formed becomes

A. Sharper
B. Reduced in size
C. Enlarged
D. Blurred

Question 29:

• WAEC 2002

The refractive index of a medium relative to air is 1.8. Calculate to the nearest degree, the critical angle for the medium

A. 68^o
B. 56^o
C. 34^o
D. 18^o

Question 30:

• WAEC 2002

A converging lens of focal length 15cm forms a virtual image at a point 10cm from the lens. Calculate the distance of the object from the lens

A. 10.00cm
B. 6.00cm
C. 5.00cm
D. 1.50cm