Which one of the following is NOT a vector quantity?

Which one of these statements is true for ALL electromagnetic waves?

Which one of the following statements about diffraction is true?

Two resistors, one of 4 Ω and one of 6 Ω, are connected in parallel.Their combined resistance is:

You look through a microscope to view the Brownian motion of smoke in a container of air. Which one of the following statements is NOT true?

The specific heat capacity of a particular liquid is 3000 J kg^-1 K^-1. A large beaker containing 2 kg of the liquid has to be warmed from 25 ℃ to 35 ℃. A 100 W heater is used. If all the thermal energy could be transferred to the liquid, how long would it take?

The air temperature on a particular day is 27 ℃. An air bubble trapped in a tube by a thread of liquid is able to expand freely if it is heated.At what temperature would you expect the volume of the air bubble to double?

The following statements refer to the laminated core of a transformer. Which one of them is NOT true?

Which one of these four statements is NOT true?

The nucleus of a carbon atom has six protons and eight neutrons.Which one of the following describes it?

Which one of the following is NOT a magnetic material?

A lens forms a real image of magnification ×3.Which one of the following statements is NOT true?

A girl whose weight is 250 N walks up a slope 40 m long onto a platform 3 m high. Her gain in gravitational potential energy is:

The method by which certain uranium and plutonium nuclei can release energy in a reactor is known as:

A certain nucleus has 12 protons and 16 neutrons.Which one of the following statements about the nucleus is NOT true?

The existence of a neutral particle named the neutron was first confirmed experimentally by:

A boy throws a cricket ball straight up in the air. At the very top of its flight:

An electron, with its charge of 1.6 × 10^-19 C, is moved from one place at +8 V to a different place which is at 0 V.The energy released will be:

The units of specific latent heat are:

A current of 2 mA is flowing through a wire. How long will it take for 6 coulombs of charge to pass?

Dividing 9 × 10^-2 by 3 × 10^-8 gives:

The following statements describe a magnetic field plot, showing the lines of force.Which one is true?

Which one of the following statements about constructive interference is NOT true?

The splitting of a beam of white light into the colours which make it up is called:

A detector close to a sample of radioactive material records 76 counts per second (cps). Precisely 2 days later the count rate has fallen to 22 cps.The count rate due to background radiation, taken immediately before and after the experiment, averaged 4 cps. The half-life of the material is:

A spring is 100 mm long when unstretched. A 40 N load is hung from it, and its total length increases to 120 mm. A different load on the spring causes it to become 150 mm long. If the spring obeys Hooke′s Law, this second load is:

Sweating can help to cool the body. This cooling is achieved mainly by:

In Fleming's Left Hand Rule describing the motor effect, the directions are:

The following statements describe an ordinary mercury-in-glass laboratory thermometer. Which one of them is NOT true?

Which one of the following statements about a voltmeter is NOT true?

A loudspeaker emits a steady note.A girl sings a note which is of lower pitch but higher volume. The sound wave she is producing has:

The following statements describe the molecules in a gas at around room temperature. Which one is NOT true?

Two separate forces are acting on a bar to cause it to rotate clockwise. One force is 20 N, at a distance of 3 m out from the pivot; the second force, 2 m further out, is 10 N. Their combined moment is:

Which one of the following would NOT give rise to a systematic error in an experiment?

A force of 100 N starts to act on a body of mass 20 kg which is initially at rest. After 10 s its velocity will be:

A ripple travels over the surface of some water. Its wavelength is 2 m, its amplitude is 0.1 m and its frequency is 0.5 Hz.The speed of the ripple is:

Which one of the following statements about ∝ particles is NOT true?

Boiling and evaporation both involve a liquid turning into a vapour (i.e. a gas).The following statements relate to water.Which one is NOT true?

Which one of the following statements about light passing down an optical glass fibre is NOT true?

What would be the best materials to use for making the coil and the core of an electromagnet?