0625/41/M/J/24 | 0625_s24_qp_41 | 2024 May/June 41 | IGCSE Physics Theory Paper 4 | Full Video

0:10 1 A long tube contains oil. A small ball is held at rest at the surface of the oil. At time t = 0, the ball is released and begins to fall vertically through the oil.
3:54 2 Fig. 2.1 shows two identical trolleys, P and Q, held at rest on a frictionless horizontal surface. A load is fixed to trolley P.
6:43 3 Fig. 3.1 shows a small block of ice floating in a beaker of warm water.
10:48 4 The lens in a magnifying glass is a converging lens.
(a) Fig. 4.1 shows the lens of the magnifying glass, its two focal points, F1 and F2, and its principal axis.
15:48 5 Describe how a longitudinal wave differs from a transverse wave.
19:54 6 Fig. 6.1 shows an isolated metal sphere suspended by an insulating thread from the ceiling.
22:48 7 The electromotive force (e.m.f.) of a battery is 7.5 V. Define the term electromotive force.
27:07 8 The isotope thallium-208 (208Tl) is radioactive. It decays by β-decay.
Thallium-208 decays to an isotope of lead (Pb).
30:15 9 The Sun is one of many billions of stars in the Milky Way. The Sun emits a very large quantity of
energy as electromagnetic radiation.