Theory

CH27 - MEDICAL IMAGING

Fluorine-18 ($^{18}_{9}\text{F}$) decays by beta-plus ($\beta^+$) emission with a half-life of 110 minutes.(a) (i) State the name of the beta-plus par...

2024 Winter

4

Theory

CH27 - MEDICAL IMAGING

Fluorine-18 ($^{18}_{9}\text{F}$) decays by beta-plus ($\beta^+$) emission with a half-life of 110 minutes.(a) (i) State the name of the beta-plus par...

2024 Winter

3

Theory

CH27 - MEDICAL IMAGING

(a) Describe how reflected ultrasound pulses may be used to obtain diagnostic information about internal structures......................................

2024 Summer

6

Theory

CH27 - MEDICAL IMAGING

Ultrasound and X-rays are both types of wave that are used in medical diagnosis to form images of internal body structures.(a) Complete Table 10.1 to ...

2023 Winter

4

Theory

CH27 - MEDICAL IMAGING

(a) X-rays for use in medical diagnosis are produced in an X-ray tube. In the X-ray tube, charged particles are accelerated towards a metal target by ...

2023 Summer

5

Theory

CH27 - MEDICAL IMAGING

(a) Complete Table 10.1 to state, for each type of wave:• the method of production of the wave• whether the wave that is detected and used to form...

2023 Winter

3

Theory

CH27 - MEDICAL IMAGING

(a) Table 8.1 shows some data relating to the properties of air, gel and body tissue. The data are given to three significant figures.[Table_1]\begin{...

2023 Summer

2

Theory

CH27 - MEDICAL IMAGING

Positron emission tomography (PET scanning) involves the detection of gamma-radiation in order to identify the position of origin of positrons in the ...

2022 Winter

4

Theory

CH27 - MEDICAL IMAGING

(a) (i) Explain how X-rays are produced for use in medical diagnosis.....................................................................................

2022 Summer

3

Theory

CH27 - MEDICAL IMAGING

(a) (i) Explain how X-rays are produced for use in medical diagnosis. ..................................................................................

2022 Summer

5

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

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

2020 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

Which quantity is a scalar?

2020 Summer

3

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

3

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

3

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

2

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

4

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

1

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

3

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

3

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

2