Physics 2009 Neco Past Questions and Answers

Question 41 :

• NECO 2009

In the electrical method of making a magnet, the polar the magnet formed depends on the ____________

A. Amount of current passed
B. Direction of the current
C. Nature of the material used
D. Orientation of the magnetic material in space
E. Size of the magnetic material

Question 42 :

• NECO 2009

Two images Y and X are formed by a plane mirror and a convex mirror respectively. Which of the following is correct about their characteristics?

A. Both are inverted
B. The magnification of Y is greater than one while that of X is one
C. The magnification of Y is one while that of X is less than one
D. Y is inverted while X is erect
E. Y is real while X is virtual.

Question 43 :

• NECO 2009

The electric potential at a distance d from a point charge q in air of permittivity e_o is expressed as ____________

A. Q² ÷ 4πe_od
B. Q² ÷ 4πe_o
C. Q ÷ 4πe_od²
D. Q ÷ 4πe_od
E. Q ÷ 4πe_o²d

Question 44 :

• NECO 2009

The work done in extending a spring by 40 mm is 1.52J. Calculate the elastic constant of the spring.

A. 38.8 Nm^-1
B. 60.8 Nm^-1
C. 190.0 Nm^-1
D. 1900.0 Nm^-1
E. 3800.0 Nm^-1

Question 45 :

• NECO 2009

Which of the following statements is correct about volatile liquids? They have ____________

A. Low boiling point
B. Low evaporating rate
C. High conductivity
D. High density
E. High viscosity