1997 - JAMB Physics Past Questions and Answers - page 5
41
The following are the scores of ten students in a test of 20 marks: 15, 16, 17, 13, 16, 8, 5, 16, 19, 17. What is the modal?
A
13
B
15
C
16
D
19
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42
Find the standard deviation of the following data -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5
A
2
B
3
C
√10
D
√11
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43
A
\( 15^{\circ} \)
B
\( 30^{\circ} \)
C
\( 45^{\circ} \)
D
\( 60^{\circ} \)
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44
A
mg sinθ and the normal reaction
B
mg sinθ and the force of friction
C
mg sinθ and the normal reaction
D
mg cosθ and the normal reaction
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45
A
T =2√3/3
B
T= 2F
C
T = 5V3F/3
D
T = 5F
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46
A
tan θ = coefficient of static friction
B
cos θ = coefficient of dynamic friction
C
sin θ = coefficient of sliding friction
D
sec θ = limiting frictional force
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47
A
destructively to produce a wave of larger amplitude
B
destructively to produce a wave of smaller amplitude
C
constructively to produce a wave of larger amplitude
D
constructively to produce a wave of smaller amplitude
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48
A
Penumbra and sees a partial eclipse
B
Penumbra and sees a total eclipse
C
umbra and sees a partial eclipse
D
umbra and sees a total eclipse
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49
A
\( \theta _3 \)
B
\( \theta _2 \)
C
\( \theta _1 \)
D
\( \theta _4 \)
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