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

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

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

A. 45^o    B. 0^o    C. 90^o    D. 180^o

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

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

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

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 60^o to the vertical, find the force on each student’s arm.

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

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 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

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

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 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 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 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 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.

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