Physics Past Questions

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2631

Two isotopes of uranium are designed as \(^{238}U\) and \(^{235}U\). The numbers 238 and 235 represent their

A. atomic numbers
B. nucleon numbers
C. proton numbers
D. neutron numbers

View Answer & Discuss (5) WAEC 2009

2632

The main difference between x-rays and \(\gamma-rays\) lies in their

A. ionizing ability
B. absorption rate
C. mode of production
D. mode of propagation

View Answer & Discuss (9) WAEC 2009

2633

An electron of mass 9.1 x 10^-31 kg moves with a speed of 10⁷ms^-1. Calculate the wavelength of the associates wave[h = 6.6 x 10^-34Js]

A. 9.0 x 10^-24m
B. 4.55 x 10^-17m
C. 7.25 x 10^-11m
D. 6.20 x 10^-8m

View Answer & Discuss (2) WAEC 2009

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2634

Which of the following properties of a long steel bar would alter if the bar were melted, recast into a cube and allowed to cool to its original temperature?

A. sensity
B. volume
C. specific heat capacity
D. electrical resistance

View Answer & Discuss (6) WAEC 2010

2635

Which of the following instruments is best for measuring the diameter of a thin constantan wire?

A. callipers
B. metre rule
C. micometer screw guage
D. vernier callipers

View Answer & Discuss (4) WAEC 2010

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