The diagram above illustrates a micrometer screw gauge. Determine its reading

Which of the following dimensions represents impulse?

A body accelerates uniformly from rest at 2ms¯². Calculate its velocity when it has travelled a distance of 9m.

Which of the following statements about matter is not correct?

A ball is projected horizontally from the top of a tower. Neglecting air resistance, which of the following statements about its motion is are correct? I. Vertical acceleration on the ball decrease as it falls II. The vertical force on the ball remains constant III. The vertical speed of the ball increases as it falls

Two forces 100N and 60N act on an object of mass 10kg as illustrated in the diagram above. Neglecting friction, calculate the acceleration of the object.

A body weighing 14N in air is partially immersed in water. If the mass of water displaced in the process is 200g, calculate the upthrust on the body. [g = 10 ms¯²]

Which of the following process is not surface phenomenon?

A chemical balance is used for measuring

A body is whirled round a circular path at constant speed. Which of the following diagrams correctly indicates the direction of the body's velocity (v) and accelerations (a)?

A motorist travelling at 72kmh¯¹ had his eyes shut for 0.4s during a hard sneeze. Calculate the distance covered by him during this time interval.

The angle at which a projectile must be fired to cover maximum range is

A body can undergo the following types of motion except

Which of the following graphs correctly represents the relationship between the kinetic energy K.E. and the displacement (d) from point of release of a swinging pendulum bob?

The energy stored in a spring of stiffness constant k = 2000Nm¯¹ when extended by 4cm is

Ice of mass 50g at 0°C was completely melted by 70% of the total heat energy supplied. Calculate the total heat energy supplied. [Specified latent heat of fusion of ice = 336Jg¯¹]

A plane is inclined at an angle to the horizontal. Its velocity ratio is

The diagram above illustrates a beaker of water being heated. It is observed that as the bubbles rise they get bigger in size. The reason for this observation is

Which of the following devices transforms light energy to electrical energy?

A motor of a corn mill machine operates on electrical energy of 1.44 × 10⁵ J. If one-quarter of the energy is wasted in the form of sound and heat, determine the efficiency of the machine

Thermal energy added or removed from a substance that changes the state of the substance is called

The maximum density of water occurs at a temperature of

A vapour whose molecules are in dynamic equilibrium with those of its own liquid is said to be

The diagram above illustrates two waves of equal amplitude A and frequencies approaching each other. When the two waves meet at a point midway between them, the vertical displacement of the resulting wave will be

A rainbow is formed when sunlight is incident on water droplets suspended in the air due to

Which of the following statements about the 3\text{rd} overtone of a vibrating air column of an open pipe is correct?

Consider the wave equation: y = 10 sin 7(x - 50t). What does the number 10 in the equation represent?

Plane waves passing through a narrow gap emerge as circular waves. This phenomenon is known as

A ray of light incident at angle θ in a rectangular prism grazes the surface of the prism on emerging from the prism. Determine the value of θ. [Absolute refractive index of the materials of the prism is 1.5]

The diagram above illustrates a wave set-up between two fixed ends 4.0m apart. If the speed of the wave is 1.0ms¯¹, its wavelength and frequency respectively are

Two plane mirrors are inclined at angle 20° to each other. Determine the number of images formed when an object is placed between them.

A converging lens of focal length 10cm forms an erect image three times the size of a real object. Calculate the distance between the object and the image

The inverse of the time required for a wave to complete one full cycle is called

Two bar magnets are placed near each other. Which of the following diagrams correctly illustrates the magnetic field pattern formed by the pair?

The force per unit charge experienced at a point in a field is the

Which of the following object is not a conductor of electricity?

A circuit is set up as shown in the diagram above. When the key is closed, the reading on the ammeter will be

Which of the following statements is or are correct? I. Gravitational potential due to a mass at a point a distance r away is proportional to r² II. Gravitational field strength is a scalar quantity III. Gravitational intensity is proportional to the weight of a unit mass

The diagrams below illustrate electrical connections to the element of an electric pressing iron. In which of the connections is the fuse correctly fixed?

A transformer connected to a 240Vrms has 3000 turns in its primary coil and 500 turns in its secondary coil. Calculate the output voltage

A lamp rated 100W, 240V is lit for 5 hours. Calculate the cost of lighting the lamp if 1kWh of electrical energy cost ₦5.

A battery of e.m.f. 3.0V is connected across a potentiometer wire AB of 10Ωm¯¹ as illustrated in the diagram above. If the jockey J makes contact at the 30cm mark, determine the resistance of length AJ and voltage across AJ.

The main reason why a.c. is transmitted at very high voltage and low current is that it

The diagram above illustrates two charged bodies, X and Y separated by a distance r. Each body has charge q and mass m. Which of the following statement about electrostatic force Fe and the gravitational force Fg acting between the bodies is correct?

The opposition offered to an A.C. circuit in a C-R series circuit is known as

Which of the following pairs of concepts constitutes complementary variables as expressed by the Heisenberg uncertainty principle?

The nucleon number of an atom is the total number of

n = ∞ _____________________ 0.0eV

E = 3 _____________________ -1.6eV

E = 2 _____________________ -3.7eV

E = 1 _____________________ -5.5eV

E = 0 _____________________ -10.4eV.

The energy levels is the mercury atoms is illustrated in the diagram above. Calculate the ionization energy of the atom.

Which of the following statements about gamma radiation is correct? Gamma radiation can

The table above shows the components of electromagnetic spectrum in order of increasing frequency. Which of the following sets correctly identifies P, Q and R respectively?