Waec Physics 2006 Past Questions and Answers

Question 36:

• WAEC 2006

Which of the following actions is necessary in order to tune a string to produce a note of an octave higher than its fundamental?

A. Doucling the length of the string
B. Reducing the tension by half
C. Reducing the mass per unit length
D. Increasing the tension four times

Question 37:

• WAEC 2006

The acceleration due o gravity may be defined as the force

A. Of attraction of the sun and on the earth
B. With which the earth revolves around the sun
C. With which the earth attracts one kilo-gram mass
D. Of the moon on the earth

Question 38:

• WAEC 2006

An electron of mass m and charge \(\Box\) enters a uniform electric field between two metal plates P and q separated by a distance d. P is maintained at a potential V while Q is earthed. Determine an expression for the magnitude of the acceleration of electron through the field

A. \(\frac{eV}{md}\)
B. \(\frac{d}{meV}\)
C. \(\frac{md}{eV}\)
D. \(\frac{e}{Vmd}\)

Question 39:

• WAEC 2006

Which of the following factors does not affect the capacitance of a parallel plate capacitor?

A. Area of the plates
B. Nature of the surface of the plates
C. Distance of separation between the plates
D. Nature of the insulating material between the plates

Question 40:

• WAEC 2006

The equivalent capacitance of a 3\(\mu F\) capacitor and a 6\(\mu F\) capacitor connected in parallel is

A. 2.0\(\mu F\)
B. 3.0\(\mu F\)
C. 4.5\(\mu F\)
D. 9.0\(\mu F\)