by Sunday | Nov 5 | Physics JAMB
A. Concave Mirror B. Concave lens C. Prism D. Convex lens Correct Answer: Option B – Concave lens
by Sunday | Nov 4 | Physics JAMB
A. Positive charge means deficit electrons B. Negative charge means excess of electrons C. electric current means movement of electrons D. All of the above Correct Answer: Option D – electric current means movement of...
by Sunday | Nov 4 | Physics JAMB
A. 30cm³ B. 40cm³ C. 50cm³ D. 20cm³ Correct Answer: Option D – 20cm³ Explanation Using boyle’s law P1V1 = P2V2 V2 = P1V1/200 = 400×10/200 = 20cm³
by Sunday | Nov 4 | Physics JAMB
A. Sinθ B. Cosθ C. Tanθ D. 1/sinθ Correct Answer: Option D – 1/sinθ
by Sunday | Nov 4 | Physics JAMB
A. wave in closed pipe B. radio waves C. water waves D. sound waves Correct Answer: Option B – radio waves Explanation Mechanical waves require material medium for their propagation only radio waves among the options docs require a material...
by Sunday | Nov 4 | Physics JAMB
A. 5.0A B. 3.7A C. 4.5A D. 4.0A Correct Answer: Option B Explanation V = IR from ohms law I = V/R Since the resistance are in parallel 1Reff = 1/8 + 1/12 + 1/6 = (2+3+6)/36 = 11/36 Reff = 36/11 = 3.27 I = I1 + I2 + I3 = V/Reff= 12/3.27 = 3.669A I =...
by Sunday | Nov 4 | Physics JAMB
A. N80.00 B. N45.36 C. N65.00 D. N57.12 Correct Answer: Option D – N57.12 Explanation Seven 40W lamps = 7 × 40 = 280W Five 80W lamps = 5 × 80 = 400W Total power = 280W + 400W = 680W = 680KW/1000 = 0.68KW The kilowatt hour = 0.68 KW × 12 hrs = 8.16 KWh Cost is N...
by Sunday | Nov 4 | Physics JAMB
A. Zener material B. P-n junction C. n-type D. p-type Correct Answer: Option C = n-type Explanation When silicon is doped with a trivalent atom. A p-type semi-conductor will be formed when silicon is doped with a pentavalent atom such as arsenic, a n-type...
by Sunday | Nov 4 | Physics JAMB
A. 5 B. 4 C. 3 D. 2 Correct Answer: Option C – 3 Explanation When two mirrors are inclined at an angle θ, the number of images formed, n = 360/θ − 1 ∴ since θ = 90° ∴ 360/θ − 1 = 4 − 1 =...
by Sunday | Nov 4 | Physics JAMB
A. diffusion B. osmosis C. capillarity D. surface tension Correct Answer: Option C – capillarity Explanation Capillarity is the tendency of a liquid to rise or fall in a narrow tube and it explains why a blotting paper absorbs...
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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