UTME 2023 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The motion of the moving skin of a talking drum can rightly be described as:
A. translational
B. random
C. rotational
D. oscillatory
Question 2
Which of the following statements is correct? Silvered walls of a vacuum flask are used to prevent:
A. heat loss due to conduction
B. heat loss due to convection
C. heat loss due to radiation
D. N/A
Question 3
An electric cell has an internal resistance of \( 2 \Omega \). A current of \( 0.5\text{A} \) is found to flow when a resistor of \( 5 \Omega \) resistance is connected across it. What is the electromotive force of the cell?
A. 5 volts
B. 3.5 volts
C. 2.5 volts
D. 1 volt
Question 4
The sum of the currents \( I_{1} \) and \( I_{2} \) in the Fig above is
A. 1.2A
B. 0.6 A
C. 0.8 A
D. 2 A
Question 5
Mercury is a better barometric fluid than water because I. It needs no colouring II. Its density is many times greater than that of water III. It does not wet glass IV. It has a high vapour pressure V. It has a high boiling point Which of the above statements is/are true?
A. IV only
B. I and II only
C. I, II and III only
D. III and IV only
Question 6
The lack of power of accommodation which is mainly due to the hardening of the eye lens and is usual with the advance of old age is called?
A. myopia
B. hypermetropia
C. presbyopia
D. astigmatism
Question 7
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 0.425 kg and can displace \( 50 × 10^{-3} m³\) of water is made of?
A. zinc
B. brass
C. copper
D. gold
Question 8
A given quantity of heat increases the temperature of 150 grams of water from 9°C to 15°C and increases the temperature of an equal volume of oil weighing 150 grams from 9°C to 25°C. The ratio of the specific heat of oil to that of water is:
A. 0.36
B. 0.56
C. 0.76
D. N/A
Question 9
A capacitor and a resistor are connected in series with each other and in series with an accumulator of negligible internal resistance. The potential difference across the terminals of the capacitor is:
A. Twice the e.m.f. of the accumulator
B. less than the e.m.f. by the potential drop across the resistor
C. greater than the e.m.f.
D. N/A
Question 10
An object is positioned between two plane mirrors inclined at right angles to each other. The object is 1 unit distance from each mirror. The number of images formed is:
A. 1
B. 2
C. 3
D. 4
Question 11
What is the total resistance in the above diagram?
A. \( 5\text{ ohms} \)
B. B. \( 15\text{ ohms} \)
C. C. \( 25\text{ ohms} \)
D. D. \( 35\text{ ohms} \)
Question 12
In sunlight, a blue flower looks blue because we see the flower by the light it?
A. receives from our eye
B. disperses
C. absorbs
D. reflects
Question 13
The diagram shows the lens arrangement in:
A. a compound microscope
B. an astronomical telescope
C. a binocular
D. a periscope
Question 14
The diagram in the above figure shows the prism arrangement in a
A. periscope
B. microscope
C. stereoscope
D. projector
Question 15
An inclined plane of angle \( \theta \), acting as a simple machine, has a velocity ratio?
A. \( \sin \theta \)
B. \( 1 / \sin \theta \)
C. \( \cos \theta \)
D. \( 1/\cos \theta \)

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