JAMB Physics Past Questions & Answers - Page 170

A ray of light is incident at an angle of 30^o on a glass prism of refractive index 1.5. Calculate the angle through which the ray is minimally deviated in the prism. (The medium surrounding the prism is air)

In the arrangement illustrated above, Y and B are yellow and blue transparent light filters respectively. The white object through the filters is

Two mirrors are inclined as shown in the diagram. A ray of light RO strikes the arrangement at O and emerges along PO. The emergent ray has been deviated through

The graph above shows the expansion of water as the temperature increases from 0°C. Which of the following deductions from the graph are true?

i. Water has its maximum density at Q.
ii. The volume of water is greater at 0°C than at 4°C.
iii. The volume of water decreases uniformly when cooled from 100°C.
iv. When water solidifies, its volume increases

Two forces, whose resultant is 100N are perpendicular to each other. If one of them makes an angle of 60^o with the resultant, calculate the magnitude. (Sin 60^o = 0.8660, Cos 60^o = 0.500)