Jamb Physics 2004 Past Questions and Answers

Question 41:

• JAMB 2004

The phase difference between waves P and q in the diagram above is

A. 2Ï€
B. π
C. ^Ï€/₄
D. ^Ï€/₂

Question 42:

• JAMB 2004

The change in volume when 450kg of ice is completely melted is
[density of ice = 900 kgm^-3, density of water = 100 kgm^-3]

A. 0.50m³
B. 0.45m³
C. 0.05m³
D. 4.50m³

Question 43:

• JAMB 2004

Tea pots are often silver-coated to prevent heat loss by

A. Conduction only
B. Convention only
C. Convection and conduction
D. Radiation only

Question 44:

• JAMB 2004

I. Wavelength
II. Medium of propagation
III. Wave velocity
IV. Frequency
V. Energy
Which of the above are used for characterizing waves?

A. I, II and V
B. I and IV
C. I, III and IV
D. III, IV and V

Question 45:

• JAMB 2004

A 50W electric heater is used to heat a metal block of mass 5kg. If in 10 minutes a temperature rise of 12^oC is achieved, the specific heat capacity of the metal is

A. 400 J kg^-1K^-1
B. 500 J kg^-1K^-1
C. 390 J kg^-1K^-1
D. 130 J kg^-1K^-1