• 9702 June 2016 Paper 42 Worked Solution | A-Level Physics

Question 1
A binary star consists of two stars A and B that orbit one another, as illustrated in Fig. 1.1.



Question 2
A container has a volume of 1.8 × 104 cm3.  The ideal gas in the container has a pressure of 2.0 × 107 Pa at a temperature of 17 °C.



Question 3
Suggest suitable types of thermometer, one in each case, to measure



Question 4
A metal block hangs vertically from one end of a spring. The other end of the spring is tied to a thread that passes over a pulley and is attached to a vibrator, as shown in Fig. 4.1.



Question 6
By reference to electric field lines, explain why, for points outside an isolated spherical conductor, the charge on the sphere may be considered to act as a point charge at its centre.



Question 7
State two uses of capacitors in electrical circuits, other than for the smoothing of direct current.



Question 8
An ideal operational amplifier (op-amp) has infinite voltage gain and infinite slew rate.



Question 10
Two coils P and Q are placed close to one another, as shown in Fig. 10.1.



Question 11
A bridge rectifier contains four ideal diodes A, B, C and D, as shown in Fig. 11.1.