The pressure of two moles of an ideal gas at a temperature of 27oC and volume 10-2m3 is?
[R = 8.313 J mol-1K-1]

The wave phenomenon demonstrated in the diagram above is?

The diagram above represents the graph of the force F applied in stretching a spiral spring against the corresponding extension (X). The force constant of the spring is?

If a light wave has a wavelength of 500nm in air what is the frequency of the wave?
[c = 3 x 10\(^8\) ms-1]

Calculate the e.m.f of the cell in the above circuit if its internal resistance is negligible