Theory

CH11 - ATOMS AND RADIOACTIVITY

The table below gives details about some radioactive substances.[Table_1](a) Which of these substances has the greatest number of particles in the nuc...

2012 Summer

5

Theory

CH11 - ATOMS AND RADIOACTIVITY

The apparatus for investigating the absorption of the emissions from a radioactive source is shown in Fig. 11.1.The source and detector are about 2 cm...

2012 Winter

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

(a) The symbol for an $\alpha$-particle is either $^4_2\alpha$ or $^4_2\text{He}$.(i) What does the 4 indicate about an $\alpha$-particle?...............

2012 Winter

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

(a) Complete the following definition of radioactive half-life.The half-life of a radioactive substance is the time taken for ...........................

2011 Summer

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

The following table includes some of the properties of alpha, beta and gamma radiations.Complete the table by filling in the missing properties.[Table...

2009 Summer

3

Theory

CH11 - ATOMS AND RADIOACTIVITY

(a) A particular radioactive source is known to emit either $\alpha$-particles or $\beta$-particles.Describe an experiment involving a solid absorber ...

2012 Summer

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

Fig. 12.1 represents a neutral atom.(a) What name do we give to(i) the central mass, ....................................................................

2012 Summer

4

Theory

CH11 - ATOMS AND RADIOACTIVITY

The count-rate from a sample of radioactive material is investigated by a team of scientists in a laboratory.(a) With the radioactive sample in place,...

2011 Winter

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

(a) Complete the plot of the decay curve, for times up to $t = 12$ minutes. Draw the best curve through your points. [3](b) From your graph find:(i) t...

2009 Winter

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

(a) What is meant by \textit{radioactive decay}? ................................................................. ....................................

2012 Winter

2

MCQ

CH1 - MEASUREMENTS AND UNITS

A lump of modelling clay is moved from a small measuring cylinder to a large measuring cylinder that has twice the diameter.The reading on the small m...

2022 Summer

2

MCQ

CH2 - FORCES AND MOTION

The speed–time graph for a train is shown.Which regions of the graph show the train moving?

2022 Summer

2

MCQ

CH2 - FORCES AND MOTION

A man stands next to a railway track. A train travelling at 40 m/s takes 2.0 s to pass the man. What is the length of the train?

2022 Summer

2

MCQ

CH3 - FORCES AND PRESSURE

A spring balance operates by the compression of a spring. It has been calibrated on the Earth in grams.A beam balance operates by balancing standard m...

2022 Summer

3

MCQ

CH3 - FORCES AND PRESSURE

A measuring cylinder contains 30 cm3 of a liquid.Some more of the liquid is added until the liquid level reaches the 50 cm3 mark.The reading on the ba...

2022 Summer

3

MCQ

CH3 - FORCES AND PRESSURE

Which pieces of apparatus are the most appropriate for an experiment to plot an extension–load graph of a spring?

2022 Summer

2

MCQ

CH2 - FORCES AND MOTION

A beam is pivoted at one end, as shown. The beam weighs 6.0 N and its weight acts at a point X 40 cm from the pivot.A force of 4.0 N is applied to the...

2022 Summer

2

MCQ

CH2 - FORCES AND MOTION

The diagrams show the forces acting on four moving objects. Which object is moving at a constant speed?

2022 Summer

2

MCQ

CH4 - FORCES AND ENERGY

A mass hangs vertically from a spring. The mass is raised to a point P and is then released. The mass oscillates repeatedly between point P and a lowe...

2022 Summer

1

MCQ

CH4 - FORCES AND ENERGY

A force $F$ acts on an object and the object moves a distance $d$ in the direction of the force.What is the work done on the object?

2022 Summer

3