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

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