Theory

CH25 - QUANTUM PHYSICS

(a) Explain why, for the photoelectric effect, the existence of a threshold frequency and a very short emission time provide evidence for the particul...

2009 Summer

Theory

CH25 - QUANTUM PHYSICS

(a) Explain how a line emission spectrum leads to an understanding of the existence of discrete electron energy levels in atoms. .......................

2009 Winter

Theory

CH25 - QUANTUM PHYSICS

(a) A typical spectrum of the X-ray radiation produced by electron bombardment of a metal target is illustrated in Fig. 10.1.Explain why(i) a continuo...

2009 Winter

Theory

CH25 - QUANTUM PHYSICS

A $\pi^0$ meson is a sub-atomic particle. A stationary $\pi^0$ meson, which has mass $2.4 \times 10^{-28}$ kg, decays to form two $\gamma$-ray photons...

2010 Summer

Theory

CH25 - QUANTUM PHYSICS

(a) Briefly explain the principles of CT scanning........................................................................................................

2010 Summer

Theory

CH25 - QUANTUM PHYSICS

(a) State an effect, one in each case, that provides evidence for (i) the wave nature of a particle, ....................................................

2010 Winter

Theory

CH25 - QUANTUM PHYSICS

(a) State an effect, one in each case, that provides evidence for (i) the wave nature of a particle, ..................................................

2010 Winter

Theory

CH25 - QUANTUM PHYSICS

(a) By reference to the photoelectric effect, state what is meant by the threshold frequency.............................................................

2010 Winter

Theory

CH25 - QUANTUM PHYSICS

(a) (i) State, with reference to X-ray images, what is meant by sharpness. .............................................................................

2010 Winter

Theory

CH25 - QUANTUM PHYSICS

The linear attenuation (absorption) coefficient $\mu$ for X-ray radiation in bone, fat and muscle is given in Fig. 11.1.$$\begin{array}{|c|c|} \hline ...

2010 Winter

Theory

CH2 - MEASUREMENT TECHNIQUES

(a) State the most appropriate instrument, or instruments, for the measurement of the following. (i) the diameter of a wire of diameter about 1 mm [1...

2009 Summer

Theory

CH4 - DYNAMICS

A ball B of mass 1.2 kg travelling at constant velocity collides head-on with a stationary ball S of mass 3.6 kg, as shown in Fig. 2.1. Frictional ...

2009 Summer

Theory

CH5 - FORCES, DENSITY & PRESSURE

(a) Define the $\emph{torque}$ of a couple.   [2] (b) A torque wrench is a type of spanner for tightening a nut and bolt to a particular to...

2009 Summer

Theory

CH9 - DEFORMATION OF SOLIDS

A spring having spring constant $k$ hangs vertically from a fixed point. A load of weight $L$, when hung from the spring, causes an extension $e$. The...

2009 Summer

Theory

CH15 - SUPERPOSITION

Two sources $S_1$ and $S_2$ of sound are situated 80 cm apart in air, as shown in Fig. 5.1. The frequency of vibration can be varied. The two sourc...

2009 Summer

Theory

CH17 - ELECTRIC FIELDS

Two vertical parallel metal plates are situated 2.50 cm apart in a vacuum. The potential difference between the plates is 350V, as shown in Fig. 6.1.A...

2009 Summer

Theory

CH20 - D.C. CIRCUITS

A network of resistors, each of resistance $R$, is shown in Fig. 7.1.(a) Calculate the total resistance, in terms of $R$, between points(i) A and C,re...

2009 Summer

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

The spontaneous and random decay of a radioactive substance involves the emission of either $\alpha$-radiation or $\beta$-radiation and/or $\gamma$-ra...

2009 Summer

Theory

CH1 - PHYSICAL QUANTITIES & UNITS

In this experiment you will investigate how the current in a circuit depends on the arrangement of resistors within the circuit. You have been provide...

2009 Summer

Theory

CH1 - PHYSICAL QUANTITIES & UNITS

In this experiment you will investigate the angle of tilt of a bottle when it contains different amounts of water. (a) (i) Use the water supplied to ...

2009 Summer