Jamb Physics 1999 Past Questions and Answers

Question 36:

• JAMB 1999

²³₁₁Na + Proton → ^p_qX + alpha particle
What are the values of p and q respectively in the equation above?

A. 10 and 20
B. 12 and 24
C. 20 and 10
D. 24 and 12

Question 37:

• JAMB 1999

A semiconductor diode is used in rectifying alternating current into direct current mainly because it

A. Allows current to flow in either direction
B. Is non-linear
C. Offers a high input resistance
D. Allows current to flow only in one direction

Question 38:

• JAMB 1999

if ∆x is the uncertainty in the measurement of the position of a particle along the x-axis and ∆P_x is the uncertainty in the measurement of the linear momentum along the x-axis, then the uncertainty principle relation is given as

A. ∆x ∆P_x ≥ h
B. ∆x ∆P_x = 0
C. ∆x ∆P_x < h
D. ∆x ∆P_x = ∞

Question 39:

• JAMB 1999

If ∆x is the uncertainty in the measurement of the position of a particle along the x-axis and ∆P_a is the uncertainty in the measurement of the linear momentum along the x-axis, then the uncertainty principle relation is given as

A. ∆x ∆P_x ≥ h
B. ∆x ∆P_x = 0
C. ∆x ∆P_x < h
D. ∆x ∆P_x = ∞

Question 40:

• JAMB 1999

The diagram above shows the velocity-time graph of a vehicle. Its acceleration and retardation respectively are

A. 8.0 ms^-2, 4,0 ms^-2
B. 4.0 ms^-2, 8.0 ms^-2
C. 4.0 ms^-2, 2.0 ms^-2
D. 2.0 ms^-2, 4.0 ms^-2