LET'S WAVE AROUND THE HEAT

If a particle is executing simple harmonic motion, then the direction of the acceleration will be

• opposite to the direction of displacement

• in the direction of velocity

• opposite to the direction of restoring force

• towards the direction of displacement

Which of the following is affected the period of a pendulum?

• length

• mass

• velocity

• shape of pendulum

The distance from crest to crest in a waveform is

• amplitude

• crest

• frequency

• wavelength

Which of the following statements is FALSE about the wave propagation velocity?

• Wave propagation velocity depends on the medium in which the wave propagates

• Wave propagation velocity depends on wavelength and frequency of the wave propagation

• Wave propagation velocity varies with time

• Wave propagation velocity is the distance traveled by wave profile per unit time

In a resonating pipe which is open at both ends there

• is a node at the closed end and an antinode at the opened end

• is a node at the open end and an antinode at the closed end

• are nodes at both end

• are antinodes at both end

The apparent frequency in Doppler's effect DOES NOT depend on

• speed of the observer

• distance between the observer and source

• speed of the source

• frequency of the source

The maximum displacement from the equilibrium position is

• period

• frequency

• wavelength

• amplitude

In simple harmonic motion, speed at equilibrium position is

• minimum

• constant

• maximum

• zero

The acceleration of the particle in simple harmonic motion is

• zero when the velocity is greatest

• always in the opposite direction to its velocity

• proportional to the frequency

• inversely proportional to the angular frequency

A constructive interference between two sinusoidal waves of the same frequency occurs ONLY if they travel in the

• opposite direction and are in phase

• opposite direction and are antiphase

• same direction and are in phase

• same direction and are antiphase