JAMB 2024 A convex mirror has its radius of curvature 20 cm. Find the position and nature of the image of an object placed at a distance of 12 cm from the…
JAMB 2024 A 60 kg jogger runs up a long flight of stairs in 4.0 s. The vertical height of the stairs is 4.5 m. Estimate the jogger’s power output. [g = 9.8…
JAMB 2024 Find the resistance of a hollow cylindrical conductor of length 1.0 m and inner and outer radii 1.0 mm and 2.0 mm respectively. The resistivity of…
JAMB 2024 A voltmeter is connected in parallel with a variable resistance, R, which is in series with an ammeter and a cell. For one value of R the meters read…
JAMB 2024 An ideal transformer has 550 turns on the primary and 30 turns on the secondary. What is the maximum output p.d if the maximum input voltage is 3,300…
JAMB 2024 An iron rod measuring 50 cm is connected at one end to an aluminum rod measuring 100 cm, both at a temperature of 20°C. Calculate the total length of…
JAMB 2024 The inductance of a tuning circuit of an AM radio is 4 mH. Find the capacitance of the circuit required for reception at 1200 kHz.