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Past Questions

Question 4386
waec 2020
a

\(\frac{2me}{B\pi}\)

b

\(\frac{2B}{me\pi}\)

c

\(\frac{2\pi m}{Be}\)

d

\(\frac{Be}{2 \pi m}\)

Question 4387
waec 2020
a

A faint green light produces photoelectrons with less kinetic energy than a bright red light

b

A red light releases a smaller number of electrons than a green light

c

A faint green light produces photoelectrons with greater kinetic energy than a bright red light

d

A red light produces more photoelectrons than a green light

Question 4388
waec 2020
a

2.25 x 10\(^6\) J kg\(^{-1}\)

b

4.17 x 10\(^3\) J kg\(^{-1}\)

c

2.00 x 10\(^3\) J kg\(^{-1}\)

d

1.00 x 10\(^3\) J kg\(^{-1}\)

Question 4389
waec 2020
a

F \(\alpha\) d\(^2\)

b

F \(\alpha\) d

c

F \(\alpha\) d\(^{-1}\)

d

F \(\alpha\) d\(^{-2}\)

Question 4390
waec 2020
a

50.0\(\Omega\)

b

450.5 \(\Omega\)

c

195.0 \(\Omega\)

d

1950.1 \(\Omega\)

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