Theory

CH14 - WAVES

(a) Explain the main principles behind the use of ultrasound to obtain diagnostic information about internal body structures.   [4] (b) Dat...

2009 Summer

MCQ

CH14 - WAVES

The order of magnitude of the frequency of the longest-wavelength ultraviolet waves can be expressed as $10^x$ Hz. What is the value of $x$?

2009 Winter

MCQ

CH14 - WAVES

The light from two lasers passes through a vacuum. One laser emits red light and the other emits green light. Which property of the two laser beams m...

2009 Winter

Theory

CH14 - WAVES

(a) State what is meant by a progressive wave.   [2] (b) The variation with distance x along a progressive wave of a quantity y, at a parti...

2009 Winter

MCQ

CH14 - WAVES

Electromagnetic waves from an unknown source in space were found to be significantly diffracted when passing through gaps of the order of $10^{-5}\, \...

2010 Summer

MCQ

CH14 - WAVES

Electromagnetic waves from an unknown source in space were found to be significantly diffracted when passing through gaps of the order of $10^{-5} \te...

2010 Summer

Theory

CH14 - WAVES

(a) A source of sound has frequency $f$. Sound of wavelength $\lambda$ is produced by the source. (i) State what is meant by the frequency of the so...

2010 Summer

Theory

CH14 - WAVES

Explain the main principles behind the generation of ultrasound to obtain diagnostic information about internal body structures.

2010 Summer

Theory

CH14 - WAVES

Explain the main principles behind the $\textbf{generation}$ of ultrasound to obtain diagnostic information about internal body structures.

2010 Summer

MCQ

CH14 - WAVES

The graph shows how the displacement of a particle in a wave varies with time. Which statement is correct?

2010 Winter

Theory

CH2 - MEASUREMENT TECHNIQUES

Measurements made for a sample of metal wire are shown in Fig. 1.1. Fig. 1.1 (a) State the appropriate instruments used to make each of these meas...

2011 Summer

Theory

Kinetic Energy

(a) Explain what is meant by work done. [1] (b) A car is travelling along a road that has a uniform downhill gradient, as shown in Fig. 2.1. ...

2011 Summer

Theory

CH5 - FORCES, DENSITY & PRESSURE

(a) Explain what is meant by centre of gravity. (b) Define moment of a force. (c) A student is being weighed. The student, of weight $W$, stands 0.3...

2011 Summer

Theory

CH9 - DEFORMATION OF SOLIDS

(a) Define, for a wire, (i) stress,    [1] (ii) strain.    [1] (b) A wire of length 1.70 m hangs vertically from a fixed point,...

2011 Summer

Theory

CH20 - D.C. CIRCUITS

(a) A variable resistor is used to control the current in a circuit, as shown in Fig. 5.1. The variable resistor is connected in series with a 12V po...

2011 Summer

Theory

CH5 - FORCES, DENSITY & PRESSURE

(a) State two assumptions of the simple kinetic model of a gas.   [2] (b) Use the kinetic model of gases and Newton's laws of motion to exp...

2011 Summer

Theory

CH15 - SUPERPOSITION

(a) Explain the term interference.   [1] (b) A ripple tank is used to demonstrate interference between water waves. Describe (i) the appa...

2011 Summer

Theory

CH1 - PHYSICAL QUANTITIES & UNITS

(a) Distinguish between scalar quantities and vector quantities. [2] (b) In the following list, underline all the scalar quantities. accelerati...

2011 Summer

Theory

CH1 - PHYSICAL QUANTITIES & UNITS

(a) A sphere of radius $R$ is moving through a fluid with constant speed $v$. There is a frictional force $F$ acting on the sphere, which is given by ...

2011 Summer

Theory

Potential Energy

(a) (i) Explain what is meant by work done. [1] (ii) Define power. [1] (b) Fig. 3.1 shows part of a fairground ride with a carriage on rai...

2011 Summer