To obtain a virtual, erect and magnified image from a thin converging lens, an object must be placed?
A. between the focus and the lens B. at the focus C. between the focal length and twice the focal length D. beyond twice the focal length Correct Answer: Option A A. between the focus and the lens Explanation When the object is placed between the optical centre of the...A bar AB is balanced horizontally on two knife edges as illustrated as in the diagram above. Determine the weight of the bar.
A. 10.0N B. 20.0N C. 40.0N D. 50.0N Correct Answer: Option C C. 40.0NA simple barometer is constructed using a liquid Q1 of density 16.2g/cm³. Calculate the least length of the tube to be used to measure the pressure of 1.5atm. [Density of mercury = 13.6g/cm³, 1atm = 76.0 cm of Mercury]
A. 1358mm B. 957mm C. 760mm D. 638mm Correct Answer: Option D D. 638mm Explanation Let hQ and ρQ be the least length and the density of Q1 while h and ρ are the length and density of mercury respectively. h×ρ×g=hQ×ρQ×g 76cm×13.6×10=hQ×16.2×10 hQ=76×13.6×10/16.2×10...Which electrical device is illustrated below?
A. a.c. generator B. a.c. motor C. d.c. generator D. d.c. motor Correct Answer: Option C C. d.c. generatorProducts
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Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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Land Ownership Principles and Transaction Laws in Nigeria
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