grade 11

10.1 The arrangement of apparatus to demonstrate Faraday’s law ofelectromagnetic induction is shown below. 10.1.1 State Faraday’s law of electromagnetic induction in words. (2) 10.1.2 State TWO ways in which the deflection on the galvanometer can beincreased. (2) 10.2 A coil with area 0,6 m2 is held with its axis coinciding with the direction of … Read more

9.1 Two identical metal spheres, P and Q, separated by a distance d, aresuspended from an insulated rigid wooden bar, as shown in the diagrambelow. The charge on the spheres are –4 μC and +8 μC respectively. 9.1.1 Sphere Q experiences an electrostatic force. In which direction will sphere Q move? Write down only TO … Read more

8.1 All types of waves undergo diffraction. 8.1.1 Define the term diffraction. (2) 8.1.2 State the condition necessary for diffraction to occur in a single slit. (2) 8.2 Light of wavelength 460 nm passes through a single slit of width 7 x 10-6 m.A diffraction pattern is observed on a screen, as shown in the … Read more

The diagram below shows a light ray travelling through an optical fibre. The fibre ismade from two different glass materials known as the core glass and the outercladding glass. These two types of glass materials have different refractive indices. 7.1 State the TWO conditions necessary for total internal reflection to occur. (4) 7.2 Which part … Read more

The table below shows accurate values for the refractive indices (relative to air) ofsome optical media obtained during refraction experiments. The optical densities of themedia increase from water to diamond. 6.1 What important deduction about the relationship between a medium and itsrefractive index can be made from the information above?(2) 6.2 Define the term refraction.(2) … Read more

Gravitational force exists between the sun and the Earth. 5.1 State Newton’s law of Universal Gravitation in words. (2) 5.2 The mass of the sun is 330 000 times greater than that of the Earth. Thedistance between the centres of the sun and the Earth is 1,38 x 109 m.Calculate the gravitational force that the … Read more

4.1 In the diagram below, a 2 kg block is connected to a 1 kg block by means of alight inextensible string. The blocks are pulled up an inclined plane, whichforms an angle of 28o to the horizontal. The sides of the blocks which touchthe inclined plane have the same area. The kinetic frictional force … Read more

A constant force, F, pulls a 50 kg block at a constant speed over a rough horizontalsurface, AB, as shown in the diagram below. The coefficient of kinetic friction (μk)between the block and the surface is 0,4. 3.1 Draw a labelled free-body diagram showing ALL the forces acting on theblock. (4) 3.2 State Newton’s first … Read more