UTME CBT FREE Practice Test – Physics (Score 70% and Above and WIN FREE Airtime)

Hello and Welcome to UTME CBT FREE Practice Test - Physics

1. You are to attempt 40 Random Objectives Questions ONLY for  30 minutes.
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The motion of the moving skin of a talking drum can rightly be described as _____

A. translational   B. random    C. rotational    D. oscillatory

Which of the following statements is NOT true? Thermostats are used to control the temperature of _______

A. pressure cookers
B. laundry irons
C. hot water storage tanks
D. aquaria for tropical fish

Steel is more suitable for permanent magnet than iron because the former ____

A. is easily demagnetized by shaking vigorously
B. is an alloy of many metals
C. is easily magnetized by alternating current through one cycle.
D. retains magnetism more than iron.

The resultant of two forces acting on an object is maximum if the angle between them is ______

A. 45o    B. 0o    C. 90o    D. 180o

Which of the following electromagnetic waves is least energetic?

A. Infra-red     B. X-ray     C. Ultra-violet rays     D. Gamma rays

The combination of sound waves with different frequencies is known as _______

A. interference    B. diffraction   C. superposition    D. forced vibrations

A piece of substance of specific heat capacity 450J kg-1k-1 falls through a vertical distance of 20 m from rest. Calculate the rise in temperature of the substance on hitting the ground when all its energies are converted into heat. [g = 10 ms-2] In a compound microscope _______

A. there is only one lens
B. the objective lens has a shorter focal length than the eyepiece which is convex
C. the objective lens has a longer focal length than the eyepiece which is convex
D. the objective lens has a short focal length than the eyepiece which is concave

In pure semiconductor, the number of electrons in the conduction band is ___

A. equal to the number holes in the valence band
B. greater than the number of holes in the valence band
C. less than the number of holes in the valence band
D. twice the number of holes in the valence band In the given circuit, the cell P has an e.m.f. 1.5 V and an unknown internal resistance r while the cell Q has an e.m.f. 2.0 V and an internal resistance 1 ohm. If the ammeter reads 50 mA, then r is equal to _______

A. 0.5 ohms     B. 0.62 ohms     C. 1.0 ohms     D. 2.0 ohms

The magnetic force on a charged particle moving with velocity v is ___

A. proportional to both the magnitude of the charge and the velocity v
B. independent of the magnitude of the charge
C. proportional to the velocity v only
D. proportional to the magnitude of the charge only.

A hand bag containing some load weighing 162 N is carried by two students each holding the handle of the bag next to him. If each handle is pulled 60o to the vertical, find the force on each student’s arm.

A. 324 N    B. 162 N    C. 121 N    D. 81 N

The velocities of light in air and glass are 3.0 x 108 ms-1 and 2.0 x 108 ms-1 respectively. If the angle of refraction is 30o, the sine of angle of incidence is __

A. 0.33     B. 0.50     C. 0.67     D. 0.75

A bread toaster uses a current of 4 A when plugged in a 240 volts line. It takes one minute to toast slices of bread. What is the energy consumed by the toaster?

A. 5.76 x 104 J   B. 1.60 x 104 J    C. 3.60 x 103 J   D. 5.76 x 103 J

The inner diameter of a small test tube can be measured accurately using a _____

A. micrometer screw gauge   B. pair of divider    C. meter rule    D. pair of venier calipers

The core of an efficient transformer should consist of laminated pieces of metal in order to ___

A. increase the heat produced by increasing the eddy current.
B. increase the heat produced by reducing the eddy current
C. reduce the heat produced by increasing the eddy current
D. reduce the heat produced by reducing the eddy current.

A cell can supply currents of 0.4 A and 0.2 A through a 4.0 Ω and 10 Ω resistors respectively. The internal resistance to the cell is ____

A. 2.0 Ω    B. 1.0 Ω    C. 2.5 Ω    D. 1.5 Ω

Which of the following statements is true? The frequency of a vibrating string is _____

A. proportional to its length
B. proportional to the square root of the tension within it.
C. proportional to the aptitude of vibration
D. inversely proportional to its cross-section

An electric generator with a power output of 3.0 kW at a voltage of 1.5 kV distributes power along cables of total resistance 20.0 Ω . The power loss in the cable is _______

A. 0.1W    B. 10.0W    C. 40.0W   D. 80.0W

A sonometer wire vibrating at frequency . If the tension in the wire is doubled while the length and the mass per unit length are kept constant, the new frequency of vibration is ______ A cell of internal resistance of 0.01 Ω can be measured accurately using the ________

A. ohm-meter    B. potentiometer    C. electroscope    D. meter bridge

Which of the following statements is NOT true of the image in a plane mirror? The image is _____

A. the same size as the object     B. laterally inverted    C. virtual    D. magnified

A simple pendulum has a period of 17.0 s. When the length is shortened by 1.5 m, its period is 8.5 s. Calculate the original length of the pendulum.

A. 1.5 m    B. 2.0 m    C. 3.0 m    D. 4.0 m PQR is an equilateral glass prism of refractive index 1.5. Light incident normally on face PQ as shown in the figure above will _____

A. undergo total internal reflection at face PR and then emerge normal to the face QR
B. emerge on face PR
C. undergo total internal reflection at face PR and emerge deflected away from the normal on face QR
D. be completely reflected back along its path.

If a spherical metal bob of radius 3 cm is fully immersed in a cylinder containing water and the water level rises by 1 cm, what is the radius of the cylinder?

A. 12 cm    B. 1 cm    C. 3 cm    D. 6 cm

A ball of mass 0.1 kg is thrown vertically upwards with a speed of 10 ms-1 from the top of a tower 10m high. Neglecting air resistance, its total energy just before hitting the ground is
[g = 10 ms-2]

A. 5 J    B. 10 J     C. 15 J    D. 20 J A body is acted on by forces applied at points P and Q as shown above. Their resultant is equal to ______

A. 2√5 N in a direction N56°E
B. 2√5 N in a direction N56°W
C. 2√13 N in a direction N56°E.
D. 2√13 N in a direction N56°W

The relative densities of zinc, brass, copper, gold and silver are respectively 7.1, 8.5, 8.9, 19.3, 10.5. A metal ornament which weighs 0.425kg and can displace 50 x 10-6 m3 of water is made of ______

A. zinc    B. brass    C. copper    D. gold

The lowest note emitted by a stretched string has a frequency of 40 Hz. How many overtones are there between 40 Hz and 180 Hz?

A. 4 B. 3 C. 2 D. 1

The particle emitted when decays to is _____

A. gamma    B. beta    C. electron    D. alpha

The efficiency of a machine is always less than 100% because the ___

A. work output is always greater than the work input.
B. load lifted is always greater than the effort applied
C. effort applied is always greater than the load lifted
D. velocity ratio is always greater than the mechanical advantage.

If in a simple pendulum experiment the length of the inextensible string is increased by a factor of four, its period is increased by a factor of _____

A. 4    B. π/2    C. 2      D. 2π If current flows in the direction of the arrows in the solenoid above, the North pole is at

A. P    B. X   C. Q    D. Y

Which of the circuits illustrated below will give a total resistance of 1 Ω?  The diagram in the above figure shows the prism arrangement in a ____

A. microscope    B. stereoscope   C. projector    D. periscope

In what range of temperature is the expansion of water anomalous?

A. +208°C to ±212°C
B -80°c + -76°C
C. -4°C to 0°C
D +96°C to + 100oC
E. 0°C to + 4°C In the above diagram MN is perpendicular to ON and MP. What is the difference between the moment about N of the force of 20 newtons applied along MP and its moment about O?

A. Zero   B. 0.2 N.m   C. 0.4 N.m    D. 0.8 N.

Which of the following statements is correct? The magnetized state of an iron bar can be destroyed completely by ______

A. heating the bar to a high temperature
B. breaking the bar
C. connecting opposite poles with a small piece of iron
D. placing the bar inside a strong magnetic field The diagram shows a solid figure with base PQ and center of gravity G on an inclined plane. Which of the following statement is correct?

A. The solid will fall over if the vertical line through G lies outside the base.
B. The solid will fall over if the vertical line through G lies inside the base.
C. The solid will not fall over if the vertical line through G lies outside the base.
D. The solid can never fall over. What is the resultant capacity of the circuit in the figure above is _____

A. 1.5 µF    B. 18.0 µF    C. 6.0 µF   D. 6.8 µF

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