Physics WAEC Past Questions

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1341

an observer hears an echo 1.26 seconds after blowing a whistle near a cliff. calculate the distance of the observer from the cliff. [speed of sound in air = 330ms^-1]

A. 104.4m
B. 207.9m
C. 415.8m
D. 523.8m

View Answer & Discuss (1) WAEC 2014

1342

An object is placed in front of two plane mirrors inclined at 60^o to each other. Determine the number of the images formed

A. 2
B. 3
C. 5
D. 7

View Answer & Discuss (1) WAEC 2014

1343

An ammeter can be adapted to measure potential difference by using a

A. shunt
B. multiplier
C. rheostat
D. resistance box

View Answer & Discuss (4) WAEC 2014

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1344

The region around a magnet in which magnetic force can be expressed is known as

A. declination
B. flux density
C. field
D. flux

View Answer & Discuss (1) WAEC 2014

1345

In an ac circuit when the supply voltage frequency is equal to the resonant frequency, the current

A. leads the supply voltge by 90^o
B. lags behind the supply voltage by 90^o
C. leads the supply voltage by 45^o
D. is in phase with the supply voltage

View Answer & Discuss (1) WAEC 2014

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