Jamb Physics 2011 Past Questions and Answers

Question 6:

• JAMB 2011

A carpenter on top of a roof of 20.0m high dropped a hammer of mass 1.5 kg and it fell directly to the ground. the kinetic energy of the hammer just before hitting the ground is?[g = 10 ms^-2]

A. 600 J
B. 150J
C. 300 J
D. 450 J

Question 7:

• JAMB 2011

If a tube of small radius opened at both ends is placed in a liquid, the liquid will

A. Remain at the same level irrespective of whether the liquid wet the glass or not
B. Fall below the liquid level if the liquid wets the glass
C. Falls below the liquid level if the liquid does not wet the glass
D. Rise above the liquid level if the liquid does not wet the glass

Question 8:

• JAMB 2011

An object weighs 22 kg in water and 30kg in air. what is the upthrust exerted by the liquid on the object.
[g = 10 ms²]

A. 50 N
B. 520 N
C. 220 N
D. 80 N

Question 9:

• JAMB 2011

A metal of volume 40 cm³ is heated from 30 °c to 90 °c, the increase in volume is

A. 0.12 cm³
B. 4.00 cm³
C. 1.20 cm³
D. 0.40 cm³
E. No correct option

Question 10:

• JAMB 2011

A copper wire was subjected to a tensile stress of 7.7 x 10⁷ x 10 Nm^-2. calculate strain of the wire.
[young modules = 1.1 x 10¹¹ Nm^-2]

A. 2. 0 x 10^-5
B. 7.0 x 10^-3
C. 7.0 x 10^-4
D. 2.2 x 10^-4