S3 MIDTERM (NOVEMBER) MARK SCHEME
Scales on both axes (1)
Period and shape (1)
Acceleration towards a fixed point [or central / equilibrium](1) and
[directly] proportional to the distance from that point (1)
Accept a = kx (1) with x defined
Smooth curve drawn which extends at least to 19.
ADVANCED LEVEL GCE
A2 PHYSICS - RDFZ
MID TERM EXAMINATION
Candidates answer on the question paper
Other Materials Required:
INSTRUCTIONS TO CANDIDATES
(a) A charged particle may experience a force in an electric field and in a magnetic field.
State two differences between the forces experienced in the two types of field.
E field, force is independent of speed where B fields are proportional to spee
(a) Two similar coils A and B of insulated wire are wound on to a soft-iron core, as
illustrated in Fig. 6.1.
When the current I in coil A is switched on and then off, the variation with time t of the
Electrons are emitted from a metal surface when it is illuminated with suitable electromagnetic
(a) Name the effect described above.
(b) The variation with frequency f of the maximum kinetic energy Ek of the emitt
Answer all the questions in the spaces provided.
(a) Fig. 8.1 shows a circuit incorporating an ideal operational amplifier (op-amp).
The voltages applied to the inverting and the non-invertin
(a) State what is meant by acoustic impedance.
product of density (of medium) and speed of sound (in medium)
(b) Explain why acoustic impedance is important when considering reflection of ultrasound
at the boundary between tw
A metal wire is held taut between the poles of a permanent magnet, as illustrated in Fig. 7.1.
A cathode-ray oscilloscope (c.r.o.) is connected between the ends of the wire. The Y-plate
sensitivity is adjusted to 1.0 mV cm1 and th