Exam Body

Year

Subject

Paper Type

UTME 2017 Physics | Objective

Are you preparing for UTME exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2017 Physics (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1

The focal length of a concave mirror is 2.0 cm. If an object is placed 8.0 cm from it, the image is at?

A. 2.7 m

B. 2.3 m

Correct C. 2.5 m

D. 2.0 m

Correct Answer: C

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Question 2

PHCN measures its electrical energy in?

A. Wh

Correct B. kWh

C. J

D. W

Correct Answer: B

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Question 3

The resultant of two forces is 50 N. If the forces are perpendicular to each other and one of them makes an angle of \( 30^{\circ} \) with the resultant, find its magnitude?

A. 100.0 N

B. 57.7 N

Correct C. 25.0 N

D. 43.3 N

Correct Answer: C

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Question 4

A piece of radioactive material contains 1000 atoms. If its half-life is 20 seconds, the time taken for atoms to remain is?

A. 20 seconds

B. 40 seconds

Correct C. 60 seconds

D. 80 seconds

Correct Answer: C

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Question 5

The correct expression for the potential at a point distance r from a charge \( q \), in an electric field is?

Correct A. \( \frac{q}{4 \pi \epsilon_{0} r} \)

B. \( \frac{q}{4 \pi \epsilon_{0} r^{r^{2}}} \)

C. \( \frac{q^{2}}{4 \pi \epsilon_{0} r^{2}} \)

D. \( x \frac{q^{2}}{4 \pi \epsilon_{0} r} \)

Correct Answer: A

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Question 6

A typical transistor characteristic is represented as?

Question 7

In a discharge tube, most of the gas is pumped out so that electricity is conducted at

A. steady voltage

B. high pressure

Correct C. low pressure

D. low voltage

Correct Answer: C

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Question 8

\( I.Moon \) \(\text{ } II.Sun \) \(\text{ } III.Street \text{ } light \) \(\text{ } IV.Stars \) Which of the above is a natural source of light?

A. II, III and IV only

B. I, II and III only

C. III and IV only

Correct D. II and IV only

Correct Answer: D

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Question 9

An object placed at the bottom of a well full of clear water appears closer to the surface due to

Correct A. refraction

B. reflection

C. an inverter

D. a magnifier

Correct Answer: A

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Question 10

A boy drags a bag of rice along a smooth horizontal floor with a force of 2 N applied at an angle of \( 60^{\circ} \) to the floor. The work done after a distance of \( 3 m \) is

A. 6 J

B. 4 J

C. 5 J

Correct D. 3 J

Correct Answer: D

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Question 11

Two spheres of masses 5.0 kg and 10.0 kg are 0.3 m apart. Calculate the force of attraction between them.

A. \( 3.57 \times 10^{-2} N \)

Correct B. \( 3.71 \times 10^{-8} N \)

C. \( 4.00 \times 10^{-2} N \)

D. \( 3.50 \times 10^{-10} \mathrm{~N} \)

Correct Answer: B

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Question 12

When very hot water is poured into two identical thin and thick glass tumblers in equal volumes, the thick one cracks because

A. of the even expansion of glass

B. glass is a good conductor of heat

C. glass is a crystal

Correct D. of the uneven expansion of glass

Correct Answer: D

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Question 13

The diagram above represents the stress-strain graph for a typical metal rod. What does X represent?

A. Yield point

Correct B. Breaking point

C. Elastic limit

D. Proportional limit

Correct Answer: B

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Question 14

Transverse waves can be distinguished from longitudinal waves using the characteristics of

A. diffraction

B. reflection

Correct C. polarization

D. refraction

Correct Answer: C

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Question 15

Which of the following pairs of light rays shows the widest separation in the spectrum of white light?

A. Green and yellow

Correct B. Blue and red

C. Indigo and violet

D. Orange and red

Correct Answer: B

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Question 16

Which of the following graphs shows the correct vector diagram for the circuit above?

Question 17

A transistor functions mainly as a

Correct A. switch and an amplifier

B. rectifier and an amplifier

C. charge storer and a switch

D. charge storer and an amplifier

Correct Answer: A

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Question 18

A thin wire with heavy weights attached to both ends is hung over a block of ice resting on two supports. If the wire cuts through the ice block while the block remains solid behind the wire, the process is called

A. fusion

B. sublimation

Correct C. regelation

D. condensation

Correct Answer: C

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Question 19

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

A. micrometer screw guage

Correct B. pair of vernier calipers

C. metre rule

D. pair of dividers

Correct Answer: B

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Question 20

A platinum resistance thermometer records 3.0 W at \( 0^{\circ} \mathrm{C} \) and 8.0 W at \( 100^{\circ} \mathrm{C} \). If it records 6.0 W in a certain environment, the temperature of the medium is

Correct A. \( 60^{\circ} \mathrm{C} \)

B. \( 80^{\circ} \mathrm{C} \)

C. \( 50^{\circ} \mathrm{C} \)

D. \( 30^{\circ} \mathrm{C} \)

Correct Answer: A

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Question 21

In the diagram above, which of the angles \( \theta_{1}, \theta_{2}, \theta_{3} \), and \( \theta_{4} \) is the angle of deviation of a ray of light passing through XYZ?

A. \( \theta_{2} \)

B. \( \theta_{3} \)

C. \( \theta_{1} \)

Correct D. \( \theta_{4} \)

Correct Answer: D

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Question 22

Which of the following is the dimension of pressure?

A. \( \mathrm{ML}^{2} \mathrm{~T}^{-3} \)

B. \( \mathrm{MLT}^{-2} \)

Correct C. \( \mathrm{ML}^{-1} \mathrm{~T}^{-2} \)

D. \( \mathrm{ML}^{-3} \)

Correct Answer: C

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Question 23

A capacitor \( 8 \mu F \) is charged to a potential difference of 100 V. The energy stored by the capacitor is

A. \( 1.0 \times 10^{4} J \)

Correct B. \( 4.0 \times 10^{-2} J \)

C. \( 1.25 \times 10 J \)

D. \( 8.0 \times 10 J \)

Correct Answer: B

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Question 24

Which of the following statements correctly describe(s) cathode rays? \( I. \) They consist of tiny particles carrying negative electric charges. \( II. \) They are deflected in a magnetic field but not in an electric field. \( III. \) They consist of fast moving neutrons and are deflected in an electric field.

Correct A. I only

B. III only

C. I and II only

D. II and III only

Correct Answer: A

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Question 25

A concave mirror has a radius of curvature of 36 cm. At what distance from the mirror should an object be placed to give a real image three times the size of the object?

A. 12 cm

Correct B. 24 cm

C. 48 cm

D. 108 cm

Correct Answer: B

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