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

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

A student creates a table to show reasonable estimates of some physical quantities. Which row is not a reasonable estimate? [Table_1]

2017 Summer

MCQ

CH3 - KINEMATICS

A particle travels in a straight line with speed $v$. The particle slows down and changes direction. The new speed of the particle is $\frac{v}{2}$. ...

2017 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The speed $v$ of a liquid leaving a tube depends on the change in pressure $\Delta P$ and the density $\rho$ of the liquid. The speed is given by the ...

2017 Summer

MCQ

CH3 - KINEMATICS

The values of displacement, velocity and acceleration of a vehicle can be deduced from graphs representing its motion. Often the areas under these gra...

2017 Summer

MCQ

CH4 - DYNAMICS

A ball is released from rest above a hard, horizontal surface. The graph shows how the velocity of the bouncing ball varies with time. At which point...

2017 Summer

MCQ

CH3 - KINEMATICS

A ball is kicked upwards at an angle of 45° to horizontal ground. After a short flight, the ball returns to the ground. It may be assumed that ai...

2017 Summer

MCQ

CH4 - DYNAMICS

The mass of a rocket-propelled truck is approximately equal to the mass of the fuel in its tank. The fuel is ignited and the truck is propelled along ...

2017 Summer

MCQ

CH3 - KINEMATICS

An object is dropped at time $t = 0$ from a high building. Air resistance is significant. Three graphs are plotted against time. The height of the...

2017 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A student attempts to find the density $\rho$ of aluminium by taking measurements of a rectangular sheet. mass $m = 51.6 \pm 0.1$ g length $l = 100.0 ...

2017 Summer

MCQ

CH4 - DYNAMICS

The graph shows how the momentum of a motorcycle changes with time. What is the resultant force on the motorcycle? 

2017 Summer