Physics SS2

Which of these statements are true of pressure in liquid?

I. Pressure acts equally in all directions II. Pressure decreases with depth III. Pressure at the same level of a liquid is the same IV. Pressure is dependent on the cross-section area of the barometer tube.

• I & III only

• I, II & III only

• I, III & IV only

• I, II, III & IV

What is the height of the liquid column in a barometer tube that would support an atmospheric pressure of 102000Nm*-2 if the density of the liquid is 2600kg/m*3 (g = 10m/s2)

• 0.75 m

• 0.76 m

• 3.92 m

• 39.23 m

Which of the following types of waves needs a medium for propagation?

• Radio waves

• X-rays

• Sound waves

• Light waves

In a transverse wave, the distance between two adjacent crests is

• the wavelength

• half the wavelength

• twice the wavelength

• One quarter of the wavelength

A wave has a frequency of 2 Hz and a wavelength of 30cm. The velocity of the wave is

• 60.0 m/s

• 6.0 m/s

• 1.5 m/s

• 0.6 m/s

If the wavelength of a wave travelling with a velocity of 360 m/s is 60m. The period of the wave is

• 6 s

• 3.6 s

• 0.17 s

• 0.6 s

Two wave trains will produce a standing wave in a medium if they interfere with

• the same frequency, different amplitude and travelling in the same direction

• the same frequency, the same amplitude and travelling in the same direction

• the same frequency, the same amplitude and travelling in opposite direction

• different frequencies, the same amplitude and travelling in the same direction

The equation of a transverse wave travelling along a string is y = 15sin0.4π(60t - x). What is the wavelength?

• 60 m

• 15 m

• 5 m

• 2 m

A progressive wave has a wavelength of 50 cm. Calculate the phase difference between two points at a distance 20 cm apart.

• 10π/3

• 5π/2

• 4π/5

• 2π/3

The equation of a wave travelling in a horizontal direction is expressed as y = 0.3sin(0.5x - 500t) where y and x are in cm and seconds. Find the maximum displacement of the particles from the equilibrium position.

• 50.0 cm

• 2.5 cm

• 0.5 cm

• 0.3 cm