Waves

The number of oscillation per unit time of a point in a wave

The distance of a point on the wave from its undisturbed position

The maximum displacement of a wave

Look at the figure. The resultant wave is represented by ...

• Green

• Red

• Blue

• Red and Blue

Look at the figure. The displacement of the resultant wave at point C is ...

• Positive

• Negative

• Zero

• Neutral

A wave has has a wavelength of 8 cm and amplitude 2 cm. The other wave has a wavelength 16 cm and amplitude 3 cm. They started vibrating at the same time and at 0 cm. What is the resultant displacement at distance 4 cm?

• • - 1 cm

• 0.5 cm

• 3 cm

• • - 2 cm

Look at the figure. Which wave has a longer wavelength?

• • Blue

• Green

The spreading of a wave when it passes through a gap

The greatest diffraction is shown by ...

• a

• b

• c

Th superposition of two or more waves from coherent source