Jamb Physics 1997 Past Questions and Answers

Question 41:

• JAMB 1997

The graphite rods surrounding the uranium fuel rods in a nuclear reactor, are used to

A. Absorb the neutrons and hence halt the nuclear process
B. Create the neutrons and hence slow up the nuclear process
C. Slowdown the neutrons and hence slow up the nuclear process
D. Speed up the neutrons and hence speed up the nuclear process

Question 42:

• JAMB 1997

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

Question 43:

• JAMB 1997

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

Question 44:

• JAMB 1997

For what value of 6 are the forces in the diagram above in equilib4ruim

A. \( 15^{\circ} \)
B. \( 30^{\circ} \)
C. \( 45^{\circ} \)
D. \( 60^{\circ} \)

Question 45:

• JAMB 1997

The fig above shows a block of mass m sliding down a rough inclined plane QP at angle \( \theta \) . The forces acting on the block along QP are

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