UTME 2021 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The pair of physical quantities consisting of vectors only are
A. acceleration and speed.
B. velocity and distance.
C. displacement and torque.
D. momentum and power.
Question 2
In the diagram above, a 200 W bulb is lighted by a 240 V a.c mains supply. If 1 kWh is sold at \( N 40 \), the cost of keeping the bulb lighted for a day is
A. N 192.00
B. N 1.92 .
C. N 19.20 .
D. N 1920.00.
Question 3
Two spheres of masses 5.0 kg and 10.0 kg are 0.3 m apart. Calculate the force of attraction between them.
A. 3.71 \( \times 10^{-8} \mathrm{~N} \).
B. 3.57 \( \times 10^{-2} \mathrm{~N} \).
C. 4.00 \( \times 10^{2} \mathrm{~N} \).
D. 3.50 \( \times 10^{-10} \mathrm{~N} \).
Question 4
Two coils x and y are arranged co-axially. If coil x carries a clockwise current and is free to move, which of the figures below depicts the direction of the induced current in coil y ?
Question 5
The instrument used by designers to obtain different colour patterns is called
A. episcope.
B. kaleidoscope
C. periscope.
D. sextant.
Question 6
The values of x, y and z respectively in the expression \( \mathrm{M}^{*} \mathrm{~L}^{*} \mathrm{~T}^{*} \) for the universal gravitational constant G are
A. \( 2,-3,-2 \).
B. \( -1,3,-2 \).
C. \( -1,2,-3 \).
D. \( -2,-1,3 \).
Question 7
When the human eye loses its power of accommodation, the defect is known as
A. astigmatism
B. long-sightedness
C. presbyopia.
D. short-sightedness
Question 8
When cold water is poured on a can containing hot water, the can collapses because the
A. steam condenses and occupies the partial vacuum in the can.
B. external air pressure counterbalances the pressure within the can.
C. external pressure becomes greater than the pressure within the can.
D. steam expands to occupy the vacuum remaining in the can.
Question 9
In the circuit diagram of a transistor above, the terminals \( \mathbf{P}, \mathbf{Q} \) and \( \mathbf{R} \) represent.
A. COLLECTOR, EMITTER and BASE.
B. EMITTER, BASE and COLLECTOR.
C. BASE, EMITTER and COLLECTOR.
D. BASE, COLLECTOR and EMITTER.
Question 10
Two inductors of inductances 5 mH and 15 rnH are connected in series and a current of 5 A flows through them. The total energy stored in the inductors is
A. 250.0 J .
B. 50.0 J .
C. 62.5 J .
D. 500.0 J .
Question 11
The diagram above shows a velocity-time graph. The statement that is true about this motion is that, the car
A. decelerates between points F and H.
B. accelerates between points F and G.
C. has a constant speed between points E and F .
D. has no acceleration between point F and G .
Question 12
When electrons from a heated filament accelerate through a vacuum toward a positive plate,
A. Only an electric field will be produced.
B. Only a magnetic field will be produced.
C. Electromagnetic waves will be produced.
D. Longitudinal waves will be produced.
Question 13
In Faraday's law of electrolysis, a graph of mass deposited against the quantity of electricity is plotted. The slope of the graph gives
A. the current flowing.
B. the charge released.
C. the electrochemical equivalent.
D. the energy released.
Question 14
Calculate the position of an object placed in front of a convex mirror having focal length of 12 cm such that an image is formed 6 cm away from the mirror.
A. 4.0 cm .
B. 3.0 cm .
C. 12.0 cm .
D. 9.0 cm .
Question 15
Steam burn is more severe than that of boiling water because
A. water boils at a higher temperature
B. steam burn is dependent on relative humidity
C. steam burn is independent of relative humidity
D. steam possesses greater heat energy per unit mass.

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