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Physics 2023 JAMB Past Questions

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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NECO offline past questions - All questions, answers & explanations in one app 25712
16

A wire of radius 0.2 mm is extended by 0.5% of its length when supported by a load of 1.5 kg. Determine the Young's modulus for the material of the wire.

[Take g = 10 ms\(^{-2}\)]

  • A. \(2.4×10^{10}(Nm^{-2})\)
  • B. \(1.5×10^{10}(Nm^{-2})\)
  • C. \(2.4×10^9(Nm^{-2})\)
  • D. \(1.3×10^{10}(Nm^{-2})\)
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17

A man swung an object of mass 2 kg in a circular path with a rope 1.2 m long. If the object was swung at 120 rev/min, find the tension in the rope.

  • A. 400
  • B. 288
  • C. 240
  • D. 379
View Answer & Discuss (1) JAMB 2023
18

A 200 kg load is raised using a 110 m long lever as shown in the diagram above. The load is 10m from the pivot P. If the efficiency of the the lever is 80%, find the effort E required to lift the load.

[Take g = 10ms-2]

  • A. 250
  • B. 300
  • C. 450
  • D. 200
View Answer & Discuss JAMB 2023
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
19

An air bubble of radius 4.5 cm initially at a depth of 12 m below the water surface rises to the surface. If the atmospheric pressure is equal to 10.34 m of water, the radius of the bubble just before it reaches the water surface is

  • A. 6.43 cm
  • B. 8.24 cm
  • C. 4.26 cm
  • D. 5.82 cm
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20

A parallel plate capacitor separated by an air gap is made of \(0.8m^2\) tin plates and 20 mm apart. It is connected to 120 V battery. What is the charge on each plate?

Take \(ε_o\) = \(8.85×10^-12 Fm^-1\)

  • A. 3.54nC
  • B. 42.5nC
  • C. 35.4nC
  • D. 4.25nC
View Answer & Discuss (2) JAMB 2023
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Join your school's WhatsApp group