CSEC Physics Paper 2 January 2006 - Free CXC Past Paper with Answers

State the TWO laws of reflection. (i) (ii)

Figure 1 shows a ray of light AB, incident on the surface of a triangular prism. (i) Draw the path taken by the ray of light AB as it travels through the transparent triangular prism shown in Figure 1. (ii) Indicate by labelling, the angle of a) incidence $i$, on the first boundary b) refraction $r$, on the first boundary.

Figure 1

Draw the path taken by the ray of light AB as it travels through the transparent triangular prism shown in Figure 1.

Indicate by labelling, the angle of a) incidence $i$, on the first boundary b) refraction $r$, on the first boundary.

Light is incident on a glass block of index of refraction of 1.5, at angle of incidence of $45^\circ$.

Calculate the angle of refraction of the light.

Figure 2 shows a waterproof spotlight, spotted/placed underwater so that the light rays it produces are allowed to strike the water's surface at varying angles of incidence, $i$. <br>

Figure 2

Calculate the critical angle in this situation.

Explain what happens to a ray of light at angle of incidence $68^\circ$.

[Refractive index of water = 4/3]

An electric hand dryer located in the washroom of an airport has the specifications:

240 V a.c.; 50 Hz; 10 A

Fill in the blanks in Table 2 below with the physical quantities associated with the numbers and units given in the specifications.

Table 2

What does the abbreviation a.c. stand for?

The only electrical components in the dryer are a motor driven fan and a heater. Draw a circuit diagram showing how you would connect these components to a 240 V a.c. source so that they can work INDEPENDENTLY.

When the fan and the heater are both in operation, the dryer draws 10 A from the 240 V mains. The fan is using 2 A.

Calculate the power used by the fan.

Determine the resistance of the heater.

Define the term 'displacement'.

State the SI unit for displacement.

Hurricane Hurry leaves Point A and travels 12 km due west at $5 \text{ km h}^{-1}$ to point B. At B, Hurry changes course and speed, and travels a further 16 km due north at $3 \text{ km h}^{-1}$ to reach Point C.

Hurricane Hurry leaves Point A and travels 12 km due west at $5 \text{ km h}^{-1}$ to point B. At B, Hurry changes course and speed, and travels a further 16 km due north at $3 \text{ km h}^{-1}$ to reach Point C.

Draw in the space below, a vector diagram showing this movement.

Calculate the displacement of Hurricane Hurry from Point A to Point C.

Determine the distance Hurricane Hurry travels in moving from Point A to Point C.

Calculate the average speed of Hurricane Hurry in travelling from Point A to Point C, in $\text{km h}^{-1}$.

State 'Newton's Third Law of Motion'.

A large truck which has a mass of 9500 kg is parked on a straight level road.

What is the weight of the truck?

What is the reaction force exerted by the road on the truck?

($g = 10 \text{ N kg}^{-1}$)

Figure 3 shows the velocity-time graph for a journey completed by the truck mentioned in (b).

Calculate the acceleration of the truck during the first 50 seconds.

State 'Newton's Second Law of Motion'

in words

in the form of an equation.

What would be the force necessary to give the truck the acceleration you calculated in (c)?

Explain how distance travelled is obtained from a velocity-time graph.

Determine the total distance covered by the truck.