POST UTME ESUT 2017 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A particle of mass 2 kg is moving in a circular path of radius 3 m with a uniform speed of 4 m/s. If the particle is subjected to a centripetal acceleration of 2 m/s^2, what is the magnitude of the force acting on the particle?
A. 8 N
B. 10 N
C. 12 N
D. 16 N
Question 2
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. It is displaced by 0.2 m from its equilibrium position and released from rest. Assuming the motion is simple harmonic, calculate the total energy of the particle.
A. 10 J
B. 20 J
C. 30 J
D. 40 J
Question 3
A block of mass 5 kg is attached to a horizontal, massless spring with a spring cons\tant of 200 N/m. The block is displaced by 2 m from its equilibrium position and released from rest. What is the maximum speed of the block as it oscillates?
A. 4 m/s
B. 8 m/s
C. 12 m/s
D. 16 m/s
Question 4
A 10 μF capacitor is connected in parallel with a 5 Ω resistor and a 120 V AC source. If the frequency of the source is 50 Hz, what is the current drawn by the capacitor?
A. ( 2 ) A
B. ( 3 ) A
C. ( 4 ) A
D. ( 5 ) A
Question 5
A particle of mass 1 kg is moving in a circular path with a radius of 2 m. If the particle has a speed of 4 m/s, determine the centripetal acceleration.
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 6
A magnetic field of 0.5 T is directed perp\endicular to a current of 2 A. What is the magnitude of the force on a wire of length 1 m?
A. 0.5 N
B. 1 N
C. 1.5 N
D. 2 N
Question 7
A 100 W heater is connected to a 220 V AC source. If the power factor of the heater is 0.8, what is the current drawn by the heater?
A. ( 0.5 ) A
B. ( 0.6 ) A
C. ( 0.7 ) A
D. ( 0.8 ) A
Question 8
A photon of energy 2 eV is incident on a metal surface with a work function of 1 eV. What is the maximum kinetic energy of the electron emitted?
A. 0.5 eV
B. 1 eV
C. 1.5 eV
D. 2 eV
Question 9
A wave has a frequency of 50 Hz and a wavelength of 0.2 m. Determine the speed of the wave.
A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s
Question 10
A ray of light passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction.
A. 20°
B. 25°
C. 30°
D. 35°
Question 11
A parallel plate capacitor consists of two plates, each of area 0.1 m^2 and separated by a dis\tance of 0.01 m. The capaci\tance of the capacitor is 10 nF. If a potential difference of 5 V is applied across the plates, what is the magnitude of the electric field between the plates?
A. 200 V/m
B. 400 V/m
C. 500 V/m
D. 600 V/m
Question 12
A body is in equilibrium under the action of two forces. One force is 10 N and the other is 20 N. If the angle between the forces is 60°, calculate the resul\tant force.
A. 22.36 N
B. 24.49 N
C. 26.67 N
D. 28.85 N
Question 13
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. If the particle is displaced by 0.2 m from its equilibrium position and released from rest, determine the equation of motion for the particle.
A. x(t) = 0.2\cos\( \sqrt{100}t \)
B. x(t) = 0.2\sin\( \sqrt{100}t \)
C. x(t) = 0.2\cos\( \sqrt{100}t \) + 0.2
D. x(t) = 0.2\sin\( \sqrt{100}t \) + 0.2
Question 14
A lens of focal length 20 cm forms an image of an object at a dis\tance of 30 cm. What is the magnification of the lens?
A. 0.5
B. 1
C. 2
D. 3
Question 15
A parallel plate capacitor consists of two plates, each of area 0.05 m^2, separated by a dis\tance of 0.005 m. The capaci\tance of the capacitor is 0.02 F. If a potential difference of 10 V is applied across the plates, calculate the charge stored on the capacitor.
A. 0.2 C
B. 0.4 C
C. 0.6 C
D. 0.8 C

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