Question 516:

• JAMB 1988

In a certain fusion reaction, a deuteron (\(^{2}_{1}H\)) interacts with a triton (\(^{3}_{1}He\)) and produces an a-particle (\(^{4}_{2}He\)) and a second product. The second product is

A. A proton
B. An electron
C. A neutron
D. A gamma ray

Question 517:

• JAMB 1988

Which of the following symbolic representations is correct for an atom X with 22 electrons and 43 neutrons?

A. \(^{43}_{22}X\)
B. \(^{22}_{43}X\)
C. \(^{65}_{43}X\)
D. \(^{65}_{22}X\)

Question 518:

• JAMB 1988

the fig above shows displacement-time graphs for three different motions. which of the following statements is correct

A. Graph 2 corresponds to the highest velocity
B. Graph 1 corresponds to zero gravity
C. Graph 3 corresponds to a particle moving in the negative x direction
D. Graph 2 corresponds to a particle moving in the positive x direction

Question 519:

• JAMB 1988

the fig above shows three different ways of hanging a heavy picture from a hook. the tension in the string will be

A. Greatest in X
B. Greatest in Y
C. Greatest in Z
D. Same in each one

Question 520:

• JAMB 1988

When one arm of a U-tube manometer is connected to a gas supply, the levels of mercury in the two arms of the U-tube is shown in the figure above, if the atmospheric pressure is 76.0cm hg, the gas pressure is

A. 62.6cm hg
B. 72.5cm hg
C. 79.5cm hg
D. 85.9cm hg