Jamb Physics 2011 Past Questions and Answers

Question 41:

• JAMB 2011

The diagram above shows two vectors at right angles to each other. The value of the resultant vector is

A. 14.0 N
B. 10.0 N
C. 12.0 N
D. 13.0 N

Question 42:

• JAMB 2011

The diagram above show the positions of a cone. The position which can be described as neutral equilibrium is represented as

A. Z only
B. X only
C. Y and Z
D. Y and X

Question 43:

• JAMB 2011

The correct expression for the potential at a point distance r from a charge q in an electric field is

A. _q²

4πεor2

B. _q²

4πεor

C. _q

4πεor2

D. _q

4πεor

Question 44:

• JAMB 2011

An image in a convex lens is upright and magnified 3 times. If the focal length of the lens is 15 cm, what is the object distance?

A. 10 cm
B. 25 cm
C. 16 cm
D. 14 cm

Question 45:

• JAMB 2011

A length of wire has a frequency of 255Hz when stretched by a force of b225N. If the fore increased to 324N, what is the new frequency of vibration

A. 306 Hz
B. 512 Hz
C. 488 Hz
D. 356 Hz