Physics 2005 WAEC Past Questions

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The distance between two points in phase on a progressive wave is 5cm. If the sped of the wave is 0.2ms^-1, calculate its period

A. 4.00s
B. 2.50s
C. 0.25s
D. 0.04s

View Answer & Discuss (2) WAEC 2005

Radio waves travel in air at 3.0 x 10⁸ms^-1. If the waves enter water of refractive index \(\frac{4}{3}\), calculate the speed of radio waves in water

A. 4.33 x 10⁸ms^-1
B. 4.00 x 10⁸ms^-1
C. 2.25 x 10⁸ms^-1
D. 1.33 x 10⁸ms^-1

View Answer & Discuss (5) WAEC 2005

The amplitude of a wave is the

A. distance travelled by the wave in a complete cycle of its motion
B. maximum diplacement of the wave particle from the equilibrum position
C. separation of two adjacent particles vibrating in a phase
D. distance between two successive troughs of the wave

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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076

Which of the following optical instruments does not depend on the use of plane mirrors?

A. kaleidoscope
B. simple microscope
C. sextant
D. simple periscope

View Answer & Discuss (1) WAEC 2005

A ray of light is incident normally on a plan mirror. If the incident ray is kept fixed while the mirror is rotated through an angle of 30^o, determine the initial and final angles of reflection respectively

A. 0^o and 60^o
B. 90^o and 30^o
C. 0^o and 30^o
D. 90^o and 60^o

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