Post Utme Physics Past Questions and Answers

Question 1121:

A pin at the bottom of a beaker filled with water appeared to be elevated when viewed from the top of the beaker: Calculate the displacement of the pin from the bottom of the beaker, if the beaker is filled to \(8.0 cm\) height and the refractive index of water is \(4 / 3\).

A. \(6.0 cm\)
B. \(2.0 cm\)
C. \(3.0\) cm
D. \(4.0 cm\)

Question 1122:

A boy stands at a distance, \(x\) from a wall. When he shout ed, the echo was hcard 2 seconds later. Calculate the distance from the wall, given that the speed of light is 330 \(m / s\).

A. \(500 m\)
B. \(340 m\)
C. \(250 m\)
D. \(495 m\)

Question 1123:

In a \(60^{\circ}\) prism of refractive index, \(1.5\), calculate the angle of minimum deviation when light is refracted through the prism.

A. \(40.2^{\circ}\)
B. \(37.5^{\circ}\)
C. \(37.2^{\circ}\)
D. \(40.5^{\circ}\)

Question 1124:

Calculate the resultant capacitance of the capacitor net work, if each capacitor has a capacitance of \(2 \mu F\)

A. \(2.0 \mu F\)
B. \(1.0 \mu F\)
C. \(2.5 \mu F\)
D. \(2.3 \mu F\)

Question 1125:

A cell of e.m. \(4.0 V\) is connected in series to two resistors \(2 \Omega\) and \(4 \Omega\), which are connected in parallel. Calculate the current which flows through the \(4 \Omega\) resistor.

A. \(1.0 A\)
B. 2.0A
C. 3.0A
D. 4.0A