Jamb Physics Past Questions (2011)

20. Steam burn is more : than that of boiling water be

33. The capacitance of a parallel plate capacitor is $20 \mu F$ in air and $60 \mu F$ in the presence of a dielectric. What is the dielectric constant?

30. The eclipse of the sun when the

16. A block of aluminium is heated electrically by a $30 W$ heater. If the temperature risesby $100°C$ in $5$ minutes, the heat capacity of the aluminium is

29. When a red rose flo observed in blue light, what does the observer see?

23. A metal of volume $40cm^3$ is heated from $30°C$ to $90°C$, the increase in volume is ..... [Linear expansivity of the metal= $2.0 \times 10^{-5}K^{-1}$]

35. If the charge of electric kWh is N4, what is the c operating an electrical app rated $2.50 V$, $2 A$ for $6$ hours

31. A cannon is fired from to After how long is the sound at a town Y $4.95 km$ away? [velocity of sound in air = $ms^{-1}$]

Z X Y The diagrams above sho positions of a cone. The p which can be described as r equilibrium is represented as

36. The correct expression 1 potential at a point, distance a charge q, in an electricfie|