Post Utme Physics Past Questions and Answers

Question 1056:

A erect image three line the size of the object is obtainedron a congave mirror of radius of curvature \(36 cm\), what is the position of the object from the mirror?

A. \(24 cm\)
B. \(12 cm\)
C. \(10 cm\)
D. \(8 cm\)

Question 1057:

The angle of deviator of light of various colours passing through a glass prism decrease in the order

A. Red, blue and orange
B. Blue, red, orange
C. Red orange, blue
D. Orange, blue, red

Question 1058:

Two positive point charge of \(12 \mu C\) andi \(\mu \mu C\) respectively are \(10 cm\) apart. The work done is bringing them \(4 cm\) closer \(T\) is \(\left( K =9 \times 10^{2} N ^{2} mc ^{2}\right)\)

A. \(600 J\)
B. \(300 J\)
C. \(6.8 J\)
D. \(518 J\)

Question 1059:

The effective capacitance of a system capacitors arranged such that a \(4 \mu F\) capacitor is in series with \(3 \mu F\).

A. \(1.7 \mu F\)
B. \(3.0 \mu F\)
C. \(4 F\)
D. 5.0 \(F\)

Question 1060:

How long will it ake to heat \(3 kg\) of water from \(28^{\circ} C\) to \(88^{\circ} C\) using an electric kettle, which taps \(6 A\) from a \(210 V\) supply?

A. \(5.6\) n minutes
B. \(9.6\) minutes
C. \(10.0\) minutes
D. \(19.3\) minutes