Waves

The acceleration of the particle executing SHM at its mean position is:

• Maximum

• Varies

• Infinity

• Zero

The angle between the displacement and the acceleration of a particle executing SHM is

• Zero to

• Zero

• 1/2

• Pi

An observer on the sea shore observes 54 waves reaching the cost per minute. If the wavelength is 10 m. The velocity is

• 9 ms–1

• 18 ms–1

• 54 ms–1

• 36 ms–1

The distance between two consecutive antinodes is 0.5m. The distance travelled by the wave in half the time period is

• 2 m

• 0.5 m

• 1 m

• 0.25m

The phase difference between the particles vibrating at two consecutive nodes is:

• Zero

• 1

• 2

• 3

The frequency of an open organ pipe is n. If one end is closed, then its fundamental frequency will be:

• n/2

• 3n

• n

• 2n

A particle execute SHM. Its initial position is mean position. The K.E of a particle against time period is represented by curve?

• A

• B

• C

• D

On decreasing the temperature, the frequency of an organ pipe becomes

• Decrease

• Equal

• Increase

• Infinity

In a stationary wave the distance between consecutive antinodes is 25 cm. If the wave velocity is 300 ms–1, then the frequency of wave will be

• 150 Hz

• 600 Hz

• 300 Hz

• 750 Hz

A sitar wire vibrates with frequency of 330 vibrations per second. If its length is increased three times and tension is increased four times, then the frequency of the wire will be

• 110 Hz

• 330 Hz

• 220 Hz

• 440 Hz