Theory

CH16 - COMMUNICATION

(a) Fig. 13.1 is a block diagram illustrating part of a mobile phone handset used for receiving a signal from a base station.Complete Fig. 13.1 by lab...

2009 Summer

Theory

CH16 - COMMUNICATION

(a) State and explain two advantages of the transmission of information in digital, rather than analogue, form. 1. .....................................

2009 Winter

Theory

CH16 - COMMUNICATION

(a) State the name of this type of modulated transmission................................................................................................

2009 Winter

Theory

CH16 - COMMUNICATION

A block diagram representing part of a mobile phone network is shown in Fig. 12.1. (a) State what is represented by(i) the blocks labelled X, ...........

2009 Winter

Theory

CH16 - COMMUNICATION

Many radio stations now broadcast on FM rather than on AM. In general, FM is broadcast at much higher frequencies than AM.(a) Explain what is meant by...

2010 Summer

Theory

CH16 - COMMUNICATION

A ground station on Earth transmits a signal of frequency 14 GHz and power 18 kW towards a communications satellite orbiting the Earth, as illustrated...

2010 Summer

Theory

CH16 - COMMUNICATION

A telephone link between two towns is to be provided using an optic fibre. The length of the optic fibre between the two towns is 75 km.(a) State two ...

2010 Summer

Theory

CH16 - COMMUNICATION

A telephone link between two towns is to be provided using an optic fibre. The length of the optic fibre between the two towns is 75 km.(a) State two ...

2010 Summer

Theory

CH16 - COMMUNICATION

(a) Wire pairs provide one means of communication but they are subject to high levels of noise and attenuation. Explain what is meant by(i) \textit{no...

2010 Winter

Theory

CH16 - COMMUNICATION

(a) Outline the principles of the use of a geostationary satellite for communication on Earth............................................................

2010 Winter

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which quantity can be measured in electronvolts (eV)?

2014 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The unit of specific heat capacity is $\text{J kg}^{-1} \text{K}^{-1}$.What is its equivalent in terms of SI base units?

2014 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

What is the vertical component of this displacement vector?

2014 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

The resistance of a lamp is calculated from the value of the potential difference (p.d.) across it and the value of the current passing through it.Whi...

2014 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

The display on a cathode-ray oscilloscope shows the signal produced by an electronic circuit. The time-base is set at 5.0 ns per division and the Y-ga...

2014 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A digital caliper is used to measure the 28.50 mm width of a plastic ruler. The digital caliper reads to the nearest 0.01 mm. What is the correct way...

2014 Summer

MCQ

CH3 - KINEMATICS

An experiment is performed to measure the acceleration of free fall $g$. A body falls between two fixed points. The four measurements shown below are ...

2014 Summer

MCQ

CH3 - KINEMATICS

In a cathode-ray tube, an electron is accelerated uniformly in a straight line from a speed of $4 \times 10^{3} \: \text{ms}^{-1}$ to $2 \times 10^{7}...

2014 Summer

MCQ

CH3 - KINEMATICS

The graph shows how the speed $v$ of a sprinter changes with time $t$ during a 100 m race. What is the best estimate of the maximum acceleration of...

2014 Summer

MCQ

CH4 - DYNAMICS

A tennis ball is dropped onto a table and bounces back up. The table exerts a force F on the ball. Which graph best shows the variation with time t o...

2014 Summer