Theory

CH10 - ELECTRON AND ELECTRONICS

Fig. 11.1 shows the main components of a cathode-ray oscilloscope.(a) State the purpose of(i) the heater,................................................

2011 Winter

2

Theory

CH10 - ELECTRON AND ELECTRONICS

When no circuit is connected to the input of a cathode-ray oscilloscope (CRO), there is a horizontal trace across the middle of the screen.Fig. 11.1 s...

2010 Winter

3

Theory

CH10 - ELECTRON AND ELECTRONICS

(a) In the space below, draw the symbol for an OR gate.[1](b) Describe the action of an OR gate in terms of its inputs and outputs.......................

2011 Summer

2

Theory

CH10 - ELECTRON AND ELECTRONICS

In a cathode-ray tube, a hot tungsten cathode releases particles by thermionic emission.What are these particles?A. $\alpha$-particlesB. electronsC. p...

2009 Summer

3

Theory

CH10 - ELECTRON AND ELECTRONICS

The diagram shows a cathode-ray tube. A student wants the cathode rays to make a spot at P on the screen. Which parts of the cathode-ray tube should...

2009 Summer

2

Theory

CH10 - ELECTRON AND ELECTRONICS

An electric field is set up between two parallel plates.An image is shown with cathode rays directed into this field, parallel to the plates: In which...

2010 Winter

2

Theory

CH10 - ELECTRON AND ELECTRONICS

Cathode rays are emitted in a vacuum tube. They consist of particles that are found in atoms.What is the name of the particles and how are the cathode...

2011 Winter

4

Theory

CH10 - ELECTRON AND ELECTRONICS

The diagram shows a device to produce cathode rays.Which part of the device is heated and why?[Table_1]

2012 Summer

3

Theory

CH10 - ELECTRON AND ELECTRONICS

Two parallel metal plates in a vacuum are connected to the terminals of a high-voltage power supply. A beam of cathode rays is passed into the space b...

2011 Winter

3

Theory

CH10 - ELECTRON AND ELECTRONICS

A student is using a cathode-ray oscilloscope to display the waveform of an alternating current supply. The arrangement is shown in Fig. 10.1.When swi...

2010 Summer

3

MCQ

CH1 - MEASUREMENTS AND UNITS

A pendulum makes 50 complete swings in 2 min 40 s. What is the time period for 1 complete swing?

2020 Summer

1

MCQ

CH2 - FORCES AND MOTION

A student investigates the motion of a ball rolling down a slope.The diagram shows the speed $v$ of the ball at different times $t$.Which statement de...

2020 Summer

1

MCQ

CH2 - FORCES AND MOTION

Which statement about acceleration is correct?

2020 Summer

2

MCQ

CH2 - FORCES AND MOTION

Which statement correctly describes the effects of placing a heavy load in a car?

2020 Summer

1

MCQ

CH2 - FORCES AND MOTION

A mass of 6.0 kg rests on the surface of a planet.On this planet, $g = 20 \text{ N/kg}$.What is the weight of the object?

2020 Summer

1

MCQ

CH1 - MEASUREMENTS AND UNITS

The mass of a measuring cylinder is 190 g.400 cm3 of liquid is put into the measuring cylinder.The total mass of the measuring cylinder and the liquid...

2020 Summer

1

MCQ

CH3 - FORCES AND PRESSURE

The diagram shows a wooden beam PQ, of negligible weight, which is attached to a wall by a hinge at P and kept in a horizontal position by a vertical ...

2020 Summer

1

MCQ

CH2 - FORCES AND MOTION

Which quantity is a vector?

2020 Summer

1

MCQ

CH2 - FORCES AND MOTION

An object of mass 1.2 kg is moving with a velocity of 2.0 m/s when it is acted on by a force of 4.0 N. The velocity of the object increases to 5.0 m/s...

2020 Summer

MCQ

CH4 - FORCES AND ENERGY

The diagram shows part of a rollercoaster ride with the car at different positions. The car runs freely down from position X to position Y and up the ...

2020 Summer

1