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

What is a reasonable estimate of the mass of a raindrop?

2020 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

Which quantity is a scalar?

2020 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A galvanometer of resistance 5\(\Omega\) is to be used in a null method.In order to protect the galvanometer from damage due to an excessive initial c...

2020 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

Readings are made of the current $I$ for different voltages $V$ across a fixed resistor. The results are plotted on a graph to show the variation of $...

2020 Summer

MCQ

CH3 - KINEMATICS

A stone is dropped from a height of 20 m above water. The graph shows the variation with time of the velocity of the stone. Which statement describ...

2020 Summer

MCQ

CH3 - KINEMATICS

A car X is travelling at a constant speed $u$ along a straight road. At time $t = 0$ a second car Y is a distance $d_0$ behind car X and travelling at...

2020 Summer

MCQ

CH4 - DYNAMICS

The resultant force acting on an object is slowly increased. Which graph could show the variation with time $t$ of the momentum $p$ of the object?&nb...

2020 Summer

MCQ

CH4 - DYNAMICS

An astronaut has a weight of 660 N when she is standing on the Earth's surface. The acceleration of free fall on the surface of Mars is $3.71 \, \tex...

2020 Summer

MCQ

CH4 - DYNAMICS

A mass $m_1$ travelling with speed $u_1$ collides with a mass $m_2$ travelling with speed $u_2$ in the same direction. After the collision, mass $m_1$...

2020 Summer

MCQ

CH4 - DYNAMICS

The diagrams show a negative electric charge situated in a uniform electric field and a mass situated in a uniform gravitational field. Which row s...

2020 Summer