Jamb Physics 1998 Past Questions and Answers

Question 16:

• JAMB 1998

A solid of weight 0.600N is totally immersed in oil and water respectively. If the upthrust of oil is 0.210N and the relative density of oil is 0.875. Find the upthrust in water.

A. 0.600N
B. 0.360N
C. 0.240N
D. 0.180N

Question 17:

• JAMB 1998

A platinum resistance thermometer records 3.0\(\Omega\) at 0^oC and 8.0\(\Omega\) at 100^oC. If it records 6.0\(\Omega\) in a certain environment, The temperature of the medium is

A. 80^oC
B. 60^oC
C. 50^oC
D. 30^oC

Question 18:

• JAMB 1998

The linear expansivity of brass is 2 x 10^-5C^-1. If the volume of a piece of brass is 15.00cm³ at 0⁰C, What is the volume at 100^oC?

A. 16.03cm³
B. 16.00cm³
C. 15.09cm³
D. 15cm³

Question 19:

• JAMB 1998

A gas has a volume of 100cm³ at 27^oC. If it is heated to temperature T until a final volume of 120cm³ is attained, calculate T

A. 33^oC
B. 60^oC
C. 87^oC
D. 114^oC

Question 20:

• JAMB 1998

A 500W heater is used to heat 0.6kg of water from 25^oC to 100^oC in t₂ seconds. If another 1000W heater is used to heat 0.2kg of water from 10^oC to 100^oC in t, seconds, find \(\frac {t_1}{t_2}\)

A. 50
B. 5
C. 5/4
D. 1/5