CSEC Physics Paper 1 May/June 2013 - Free CXC Past Paper with Answers

The unit of electrical resistance may be expressed as

$1\Omega = 1 \text{ V.A}^{-1}$

$1\Omega = 1 \text{ A.V}^{-1}$

$1\Omega = 1 \text{ W.A}^{-1}$

One gram is equal to

When used in front of a unit the prefix 'mega' means

Item 4 refers to the relationship represented by the line through Q and S in the diagram below.

When x = 0, the value of y is

A slice of bread is squeezed into a little ball. Which quantity does NOT change?

A boy measured the height of the laboratory table with a metre rule. Which of the following is MOST likely to be correct?

An object of mass, m, is attached to a spring balance and its weight, w, recorded. What will be the result if the object is taken to the moon and weighed there where the gravitational field strength is less?

Mass = m; weight greater than w

Mass = m; weight less than w

Mass greater than m; weight = w

Mass less than m; weight = w

Which of the following will be constant, if a constant net force is applied to a body?

Which of the following statements would be true? I. The elastic limit of the spring was exceeded. II. The spring obeyed Hooke's law throughout its entire extension. III. The force per unit extension in the elastic region was 7.5 N cm⁻¹

The diagrams below, drawn to scale, represent two forces, S and T, acting at O. In which of the following is the resultant in the direction, OX?

Which of the following expressions could be used to find the speed of an object?

Change in velocity / Time taken

Change in displacement / Time taken

Distance travelled / Time taken

Distance travelled × Time taken

Which of the following is the unit of momentum?

A hydroelectric power station uses a renewable source of energy, X. This energy raises water to the top of a mountain so that it has gravitational potential energy. As the water runs down the mountain, it turns a turbine which converts Y energy into Z energy. Which set of answers for X, Y and Z is correct?

Electrical / potential / kinetic

Solar / kinetic / electrical

Geothermal / potential / electrical

Chemical / kinetic / electrical

Power can be defined as

force × distance moved

A coconut falls from a tree. Which of the velocity/time graphs below BEST represents its motion, if air resistance is neglected?

A bubble of gas rises to the surface of a soft drink. This is because the

upthrust on the bubble is greater than the weight of the bubble

upthrust on the bubble is greater than the weight of water it displaces

weight of the water displaced by the bubble is less than the weight of the bubble

density of the gas is greater than the density of the drink

When the tap is opened, water will flow from P to Q until

the level of Q is at X

container I is empty

the level of P is at Y

the water depths of P and Q are equal

Which of the following is true about X and Y?

X is less dense than Y.

X and Y are both denser than water.

X and Y are both denser than mercury.

X is more dense than Y.

An object of string is tied onto a small stone and the stone is then suspended, totally immersed, in water. The tension in the string will be

equal to the weight of the stone

less than the weight of the stone

more than the weight of the stone

There are NO attractive forces between the molecules in a

The specific heat capacity of a material is the energy required to

melt 1 kg of the material with no change of temperature

change the temperature of the material by 1 K

change 1 kg of the liquid material to 1 kg of gas without a change in temperature

change the temperature of 1 kg of the material by 1 K

In the pressure law which of the following statements would be true?

I. Ratio of pressure to Kelvin temperature is constant. II. Volume is constant. III. Pressure is constant.

Which of the following statements concerning the radiation of heat would be true?

I. Radiation can only take place in a material medium. II. A good absorber is also a good emitter of radiation. III. Dark dull surfaces are better emitters than shiny ones.

An electric kettle full of water is plugged into the mains. The process by which heat travels through the water is

The specific latent heat of vapourization water is the energy required to change 1 of water at

0 °C to ice at 0 °C

99.9 °C to steam at 100.1 °C

100 °C to steam at 100 °C

0 °C to steam at 100 °C

A mass of mass, m, requires energy, E, to raise its temperature from $T_1$ to $T_2$ . The specific heat capacity of the metal will be

$\frac{E}{m(T_2 - T_1)}$

$\frac{m(T_2 - T_1)}{E}$

$\frac{E}{m(T_1 - T_2)}$

$\frac{m(T_1 - T_2)}{E}$

The spreading of a wave into the region behind an obstruction is called

Item 29 refers to the following diagram. Direction of propagation S Displacement P R Distance from origin T

Which of the following statements about the wave shown in the diagram above is/are true? I. Points P, Q and R are in phase. II. Points S and T are out of phase. III. The wavelength of the wave is the distance PR.

If sounds of differing frequencies are played in succession, in which of the following would a change be detected? (Assume amplitude constant.)

An explosion causes the emission of the following types of radiation. I. Light II. Sound III. Infra-red Which of these will be received first by a person some distance away from the source?

A vibrator on a ripple tank sends waves over the water. The vibrator is now adjusted so that the number of waves created each second is doubled. The waves would now

travel at half the original speed

travel at twice the original speed

have twice the original wave length

have half the original wave length

A ray of light in air strikes a glass block at an angle of incidence of 0°. The light will be

refracted at 90° to normal

refracted at an unknown angle

In a longitudinal wave, the particles

move forward with the speed of the wave

move backwards and forwards parallel to the direction of travel of the wave

move from side to side, perpendicular to the direction of travel of the wave

The diagram above shows a beam of light being dispersed (R-Red, V-Viol prism to form a visible spectrum. W the following makes this possible?

I. The colour violet has the wavelength, hence refrac than colour red. II. The colour red has the wavelength, hence refra than colour violet. III. The colour violet has the wavelength, hence refrac than colour red. IV. The colour red has the wavelength, hence refrac than colour violet.

Which of the following would be true of the image of an object placed at the bottom of a beaker of water and viewed vertically from above?

It is nearer to the eye than the object.

For which of the following object distances will a convex lens of focal length 18 cm produce a real image? I. 5 cm II. 18 cm III. 36 cm

When a polythene rod is rubbed with a cloth, it becomes

positively charged by gaining protons

negatively charged by gaining electrons

positively charged by gaining electrons

negatively charged by losing protons

Which of the following diagrams represents the magnetic field existing between two opposite magnetic poles?

Which of the following relationships between electrical quantities is correct?

Which of the following options gives the correct colour code for electrical wiring?

LIVE: Brown, NEUTRAL: Blue, EARTH: Green/yellow

LIVE: Red, NEUTRAL: Blue, EARTH: Green

LIVE: Blue, NEUTRAL: Green/yellow, EARTH: Brown

LIVE: Green, NEUTRAL: Brown, EARTH: Blue

Which of the following could NOT be a unit of current?

Which of the following equations CANNOT be used to determine the power dissipated in a resistor?

The refractive index of a transparent medium with a critical angle, c, for light travelling from the medium to air is

$\frac{90^\circ}{\sin c}$

$\frac{\sin 90^\circ}{\sin c}$

In domestic installation systems, which of the following should be placed in the live I. Switches II. Circuit breakers III. Fuses

In which of the following diagram resistors P and Q in series with each and parallel with R?

Which of the following equation correct?

$1 C = 1 A \times 1 s$

$1 V = 1 A \times 1 \Omega$

$1 J = 1 C \times 1 V$

$1 W = 1 V \times 1 C$

Which of the following graphs illustrates an ALTERNATING current?

Item 49 refers to the diagram below.

Two light aluminium spheres, A and B. are suspended by insulating threads. If they come apart as shown in the diagram, the force keeping them apart is

Item 50 refers to the following diagram.

Which of the circuits below could produce the voltage-time graph shown in the diagram above when the ends of the resistor are connected?

A conductor, rotating in a uniform magnetic field, induces maximum instantaneous current when the conductor cuts the magnetic field lines at

Which of the following diagrams is a representation of the current/p.d. relationship for a metallic conductor at a constant temperature?

I vs V graph sloping downwards from left to right through the origin

I vs V graph sloping upwards from left to right through the origin

I vs V graph that is a curve, increasing at a decreasing rate

I vs V graph that is a curve, increasing at an increasing rate

A wire carrying a current in a magnetic field may experience a force. Which following devices does NOT depend on this force?

Moving coil galvanometer

Which of the following statements about alternating current is true?

It can be rectified by using a semiconductor diode.

It can be changed into direct current by a transformer.

It can be used to recharge a battery.

It can be used to transmit electrical energy because of its frequency.

The Rutherford model of the atom states that an atom consists of a

solid mass of protons and electrons

nucleus of protons only, with orbiting electrons

nucleus of equal numbers of neutrons and electrons, orbiting protons

nucleus of protons and neutrons, with orbiting electrons

The number of neutrons present in the nuclide $^{222}_{86}$ Rn is

An isotope of zinc has a nuclide which can be represented as $^{65}_{30}$ Zn. The number of electrons in a neutral atom is

Which of the following scientists discovered radium?

Which of the following statements about a proton is NOT correct?

It is a hydrogen atom minus an electron.

It has the same mass as that of an electron.

It has a mass about 2 000 times that of an electron.

It has a charge equal in size but opposite in sign to that of an electron.

Which of the following are definitions of the term 'half-life' of radioactive nuclide?

I. The time taken for the activity of any given sample to fall to half its original value. II. The time taken for half the nuclei present in any given sample to decay. III. It is half the average number of disintegrations per second.

CSEC Physics Paper 1 May/June 2013 - Free CXC Past Paper with Answers

CSEC Physics Paper 1 May/June 2013 Questions