UTME 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
What types of mirrors are capable of producing parallel beams of light such as those arising from the headlamps of a car?
A. cylindrical mirrors
B. spherical mirrors
C. parabolic mirrors
D. plane mirrors
Question 2
A gas would serve as an electrical conductor under
A. reduced pressure and reduced potential
B. increased magnetic field
C. reduced pressure and high current
D. exposure to visible light
Question 3
Counting of currency notes with moist fingers is based on the principles of
A. diffusion
B. cohesion
C. viscosity
D. adhesion
Question 4
A moving coil galvanometer of \( 300 \Omega \) resistance gives full scale deflection for 1.0 mA. The resistance, R, of the shunt that is required to convert the galvanometer into a 3.0 A ammeter is
A. \( 899.70 \Omega \)
B. \( 0.10 \Omega \)
C. \( 10.00 \Omega \)
D. \( 0.01 \Omega \)
Question 5
One of the conditions necessary for an object to be in equilibrium when acted upon by a number of parallel forces is that the vector sum of the forces is
A. zero
B. negative
C. positive
D. average
Question 6
Which of the circuits illustrated below will give a total resistance of \( 1 \Omega \) ?
Question 7
The vacuum in a thermos flask helps to reduce heat transfer by
A. convection and radiation
B. convection and conduction
C. conduction and radiation
D. radiation only
Question 8
One special advantage of alcohol over mercury as a thermometric liquid is its
A. low density
B. low boiling point
C. high specific heat capacity
D. low freezing point
Question 9
The graph in the diagram above describes the motion of a particle. The acceleration of the particle during the motion is
A. \( 0.00 ms^{-2} \)
B. \( 0.25 ms^{-2} \)
C. \( 8.00 ms^{-2} \)
D. \( 4.00 ms^{-2} \)
Question 10
Lenz's law is a law of the conservation of
A. momentum
B. energy
C. electric current
D. electric charge
Question 11
A uniform metre rule QR is balanced on a knife edge which is 55 cm from R. When a mass of 10 g is hung at P as shown above, the mass of the metre rule is
A. 70 g
B. 350 g
C. 550 g
D. 35 g
Question 12
An object is placed \( 5.6 \times 10^{-4} \mathrm{~m} \) in front of a converging lens of focal length \( 1.0 \times 10^{-n} m \). The image formed is
A. real, erect and magnified
B. virtual, erect and diminished
C. real, inverted and magnified
D. virtual, erect and magnified
Question 13
The value of the tension T in the cables supporting the 20 N weight in the diagram is
A. 10.0 N
B. 40.0 N
C. 20.0 N
D. 111.8 N
Question 14
The diagram above shows a magnet with its pole moved along a soft-iron bar PQ in the direction shown. After some time, the poles at P and Q respectively are
A. North-South
B. North-North
C. South-North
D. South-South
Question 15
A bar of initial length \( l_{0} \) is heated through a temperature change \( \Delta t \) to a new length \( l \). The linear expansivity, \( \alpha \), of the bar is
A. \( \overline{l \Delta t} \)
B. \( \frac{l-l_{0}}{l_{0} \Delta t} \)
C. \( l_{0}(1+\Delta 1) \)
D. \( \frac{l-l_{0}}{l(1+\Delta \mathrm{t}) } \)

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