Jamb Physics 2012 Past Questions and Answers

Question 86:

• JAMB 2012

The pressure of a given mass of a gas changes from 200Nm^-2 to 120Nm^-2 while the temperature drops from 127°C to -73°C. The ratio of the final volume to the initial volume is

A. 2 : 5
B. 5 : 4
C. 5 : 2
D. 4 : 5

Question 87:

• JAMB 2012

The thermometric substance of an absolute thermometer is

A. Alcohol
B. Mercury
C. Helium
D. Platinum

Question 88:

• JAMB 2012

A plane sound wave of frequency 85.5Hz and velocity 342ms^-1 is reflected from a vertical wall. At what distance from the wall does the wave have antinode?

A. 2m
B. 4m
C. 1m
D. 3m

Question 89:

• JAMB 2012

A string is fastened tightly between two walls 24cm apart. The wavelength of the second overtone is

A. 24cm
B. 16cm
C. 12cm
D. 8cm

Question 90:

• JAMB 2012

A gas with initial volume of 2 X 10^-6m³ is allowed to expand to six times its initial value at constant pressure of 2 x 10⁵Nm^-2. The work done is

A. 2.0J
B. 4. 0 J
C. 12.0 J
D. 2.4 J