Jamb Physics 2004 Past Questions and Answers

Question 46:

• JAMB 2004

Metal rods of length 20m each are laid end to end to form a bridge at 25oC. What gap will be provided between consecutive rails for the bridge to withstand 75oC?
[Linear expansivity of the material = 2.0 x 10-5K-1

A. 0.20m
B. 0.22m
C. 0.25m
D. 0.02m

Question 47:

• JAMB 2004

Transverse waves can be distinguished from longitudinal waves using the characteristic of

A. Diffraction
B. Refraction
C. Polarization
D. Reflection

Question 48:

• JAMB 2004

A man exerts a pressure of 2.8 x 10³Nm^-2 on the ground and has 4 x 10^-2m² of his feet in contact with the ground. The weight of the man is

A. 102N
B. 70N
C. 140N
D. 112N

Question 49:

• JAMB 2004

Calculate the angle of minimum deviation for a ray which is refracted through an equiangular prism of refractive index 1.4

A. 60⁰
B. 29⁰
C. 99⁰
D. 90⁰

Question 50:

• JAMB 2004

A cell whose internal resistance is 0.5Ω delivers a current of 4A to an external resistor,The loss voltage of the cell is

A. 1.250V
B. 2.000V
C. 8.000V
D. 0.125V