Elementary Modern Physics - Jamb Physics Past Questions and Answers

Question 66:

• 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 67:

• 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 68:

• 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 69:

• JAMB 2000

In a thermonuclear reaction, the total initial mass is 5.02 x \(10^{-{2}{7}}\)kg and the total final mass is 5.01 x \(10^{-{2}{7}}\)kg. The energy released in the process is
[c = 3.0 x \(10^8\) ms-1]

A. 9.0 x 10^-13J
B. 9.0 x 10^-12J
C. 9.0 x 10^-11J
D. 9.0 x 10^-10J

Question 70:

• JAMB 2000

A gas would serve as an electrical conductor under

A. Reduced pressure and high current
B. Increased magnetic field
C. Reduced pressure and reduced potential
D. Exposure to visible light