Physics 2009 Jamb Past Questions and Answers

Question 36 :

• JAMB 2009

When a pentavalent impurity is added to a pure semiconductor, it becomes

A. A p-type semiconductor
B. An n-type semiconductor
C. An insulator
D. An intrinsic semi-conductor

Question 37 :

• JAMB 2009

The value of x, y and z respectively in the expression M^xL^yT^z for the universal gravitational constant G are

A. 2, -3, -2
B. -1, 3, -2
C. -1, 2, -3
D. -2, -1, 3

Question 38 :

• JAMB 2009

An air craft attempt too fly due north at 100 kmh^-1. If the wind blows against it from east to west at 60 kmh^-1, its resultant velocity is

A. 117 kmh^-1, N31^oE
B. 127 kmh^-1, N31^oE
C. 117 kmh^-1, N31^oW
D. 127 kmh^-1, N31^oW

Question 39 :

• JAMB 2009

A car accelerate uniformly from rest at 4 ms^-2. How far will it travel in the fifth complete second?

A. 100 m
B. 50m
C. 32 m
D. 18 m

Question 40 :

• JAMB 2009

A body of mass 12kg traveling at 4.2ms^-1 collides with a second body of mass 18kg at rest. Calculate their common velocity if the two bodies coalesce after collision

A. 1.5 ms^-1
B. 1.4 ms^-1
C. 2.1 ms^-1
D. 1.7 ms^-1