CSEC Physics Paper 1 May/June 2016 - Free CXC Past Paper with Answers

Which of the following pair of points are in phase?

Given that force = mass × acceleration, the unit of force could be written as

The SI unit of temperature is the

In carrying out an experiment to locate a real image using a converging lens, the object can be placed I. between the focal point and the lens II. at the focal point III. between the focal point and a point at twice the focal length

The moment of a force may be defined as the

moment in time when a force is first applied to a body

length of time for which a force is applied to a body

product of the force and its perpendicular distance from the turning point to the force

ratio of the force and its perpendicular distance from the turning point

Item 6 refers to the following diagram which shows two forces, X and Y, applied onto an object. X Y

What should be the magnitude and direction of a third force which will cause the object to remain stationary?

When a force F is applied to a spring of original length L the new length becomes L+x. What would be the new length of the spring if a force of $\frac{F}{2}$ was applied instead?

Item 8 refers to the following diagram which shows three forces of magnitudes L, M and N, all in the same plane and applied on a ring. L R M N

Which of the following equations must be TRUE in order for the ring to remain stationary?

Two forces of 8 N and 10 N CANNOT give a resultant of

From the graph it can be deducted that the runner is

going at a steady speed

going faster and faster

going slower and slower

A block is allowed to fall freely towards the ground. As it falls, its gravitational potential energy

is converted to internal energy

is converted to kinetic energy

Two smooth spheres, A and B, collide head on. Which of the following statements is/are TRUE?

I. The momentum of A is the same after collision as it was before. II. The momentum of B is the same after collision as it was before. III. The total momentum of A and B is the same after collision as it was before.

The vectors act at point O and are directly perpendicular to each other. Which of the following pairs represents BOTH the magnitude and direction of their resultant?

$a^2 + b^2$ / $\overline{OC}$

$a + b$ / $\overline{CO}$

$\sqrt{(a^2 + b^2)}$ /

The height of liquid in a vessel is $h$ and its density $\rho$ . If the atmospheric pressure is $X$ and the acceleration due to gravity is $g$ , what is the pressure on the base of the vessel? (All quantities are in SI units.)

The specific latent heat of vaporization of water is $2.26 \times 10^6 \, \text{J kg}^{-1}$ . When $0.01 \, \text{kg}$ of water is converted into steam it

absorbs $2.26 \times 10^4 \, \text{J}$

gives out $2.26 \times 10^4 \, \text{J}$

absorbs $2.26 \times 10^8 \, \text{J}$

gives out $2.26 \times 10^8 \, \text{J}$

A body weighs $60 \, \text{N}$ on earth. When taken to the moon the body weighs $10 \, \text{N}$ . Which of the following would be the MAIN reason(s) for this fact?

I. The earth rotates more slowly than the moon. II. The earth has a larger mass than the moon. III. On the moon there is no atmosphere.

Item 17 refers to the following diagram of a clinical thermometer.

What temperature is indicated by the clinical thermometer in the diagram above?

$38.3 \, ^\circ \text{C}$

$38.6 \, ^\circ \text{C}$

$38.7 \, ^\circ \text{C}$

$38.8 \, ^\circ \text{C}$

Under what conditions may we apply the following gas formula to solve problems?

$\frac{P V}{T} = \frac{P V}{T}$

I. The mass of gas must be constant. II. $P_1$ and $P_2$ must be measured in mm of mercury. III. The units of the product $P_1$ and must be the same as the units of the product of and .

Who was responsible for arriving at the conclusion that measured amounts of electrical and mechanical energy can be converted to proportionate amounts of heat energy?

Which of the following methods is the MOST suitable means of heating a brass bob in order to determine its specific heat capacity by the method of mixtures?

Subjecting it to an open flame for ten minutes

Placing it in contact with an electrical heater for ten minutes

Placing it in a boiling water bath for ten minutes

Subjecting it to an infrared beam for ten minutes

The energy required to change the state of a substance was determined to be $E_H$ . If the mass of the substance was DOUBLED, the value of $E_H$ will

Which of the following statements is FALSE?

Evaporation occurs at room temperature only.

Evaporation requires heat energy and causes cooling.

Evaporation occurs only at the surface.

In evaporation the faster molecules escape the liquid.

Most refrigerators are painted white because a white surface is

a good reflector of thermal radiation

a good absorber of radiation

a poor reflector of radiation

Which of the following diagrams BEST illustrates convection current in a liquid?

The heat from a nearby fire reaches us MAINLY by

Which of the following is the POOREST conductor of thermal energy?

Which of the following descriptions refer to BOTH a good absorber and a good emitter of thermal (heat) energy?

A polished, concave metal plate

A polished, convex metal plate

A flat, polished metal plate

A flat metal plate, painted black

Which of the following diagrams BEST represents the wave generated in a ripple tank by a small spherical dipper vibrating at a constant frequency?

From the information given, the frequency is

The range of frequencies detectable by the normal human ear is

The amplitude of the wave is

Item 33 refers to the following diagram.

From the diagram above, the refractive index of glass can be determined from the ratio

$\frac{\text{Sin m}}{\text{Sin l}}$

$\frac{\text{Sin m}}{\text{Sin n}}$

$\frac{\text{Sin l}}{\text{Sin 90}}$

$\frac{\text{Sin 90}}{\text{Sin n}}$

Item 34 refers to the following diagram which represents an object OB standing on the axis of the converging lens L. L 0 B 0 10 20 30 40 50 60 70 80 90 100 M 110 cm I IM represents the image formed. The lens is placed at the 50 cm mark of a scale marked every 10 cm.

The focal length of the lens is

A ray of white light enters a transparent glass prism. In which of the following diagrams is the dispersion of light correctly illustrated?

Which of the following statements about the wave shown in the diagram 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.

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

Magnetic induction occurs when

an N pole attracts a S pole

iron nails near a magnet become magnetized

a magnet is suspended and points in the NS direction

an electroscope is charged

Which of the following electromagnetic waves has the SHORTEST wavelength?

Ultraviolet radiation

Which of the following diagrams shows the magnetic field between a bar magnet and a piece of iron?

Which of the following diagrams BEST represents the magnetic field around the wire?

Which of the diagrams above correctly show(s) the magnetic fields created?

Which of the following materials is MOST suitable for the core of an electromagnet?

Which of the following circuit symbols represents a fuse?

An ammeter has a very low resistance so that it can be placed in

parallel with a component and not affect the circuit

series with a component and not affect the circuit

parallel with a component and the ammeter does not heat up

series with a component and the ammeter does not heat up

An ideal transformer has a primary to secondary turns ratio of 1:3. An alternating potential difference of 200 V is applied to the primary coil and a resistance of 200 $\Omega$ attached to the secondary coil. What is the current in the secondary circuit?

Which of the following are correct?

Which of the following options shows the correct match of the component name and its number?

Given the following truth table with inputs A and B and output C, which logic gate does it describe?

In the scattering experiment conducted by Geiger and Marsden, some of the alpha particles were deflected. The explanation for this phenomenon is that

electrons have a small mass

electrons have a small charge

the metal foil was only a few atoms thick

the nuclear charge and mass are concentrated in a small volume

Which of the following CANNOT be deflected by a magnetic field?

Which of the following are definitions of the term 'half-life' of a 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.

The nuclide $^{234}_{90}$ Th contains

90 protons and 234 neutrons

235 protons and 90 neutrons

90 protons and 144 neutrons

144 protons and 90 neutrons

Which of the following statements describe the nature of the three types of emissions from radioactive substances? I. Alpha radiation is a stream of helium nuclei. II. Beta radiation is a stream of electrons. III. Gamma radiation is an electromagnetic radiation of very high frequency.

Which of the following scientists discovered the relationship E = mc²?

Which of the following equations for nuclear reactions is correct?

${}{88}^{226}\text{Ra} → {}{86}^{222}\text{Rn} + \beta\text{-particle}

${}{6}^{14}\text{C} → {}{7}^{15}\text{N} + \beta\text{-particle}

${}{88}^{226}\text{Ra} → {}{86}^{222}\text{Rn} + \alpha\text{-particle}

${}{6}^{14}\text{C} → {}{7}^{15}\text{N} + \alpha\text{-particle}

CSEC Physics Paper 1 May/June 2016 - Free CXC Past Paper with Answers

CSEC Physics Paper 1 May/June 2016 Questions