Superposition of waves

1. The superposition is characteristic of

• wave motion
• particle motion
• wave and particle motion
• neither wave nor particle motion

2. The energy in the superposition of waves

• is lost
• increases
• remains same, only redistribution occurs
• may increase or decrease depending upon the medium

3. In the phenomenon of interference, energy is

• destroyed
• created
• destroyed at some places and created at other places
• neither destroyed nor created, but it is redistributed

4. In a stationary wave, the amplitude of vibrating particle

• remains constant
• is zero
• is maximum
• varies from particle to particle

5. In a stationary wave, the particle velocity at the nodal point is

• zero
• maximum and finite
• minimum but non zero
• infinity

6. The harmonic which are present in a pipe open at one end are

• Odd harmonics
• Even harmonic
• Even as well as odd memories
• No harmonics are present

7. Four wires of identical length, diameters and of the same material are stretched on a sonometer wire. If the ratio of their tensions is 1 : 4: 9 : 16 then the ratio of their fundamental frequencies are

• 16 : 9 : 4 : 1
• 4 : 3 : 2 : 1
• 1 : 4 : 2 : 16
• 1 : 2 : 3 : 4

8 . The string of a sonometer is plucked so as to make it vibrate in one segment . The sound produced is called

• first harmonic
• first overtone
• second harmonic
• second overtone

9. A closed organ pipe and an open organ pipe are tuned to the same fundamental frequency. What is the ratio of lengths ?

• 1 : 2
• 2 : 1
• 2 : 3
• 4 : 3

10 . Betas are the result of

• diffraction
• destructive interference
• Constructive and destructive interference
• superposition of two waves of nearly equal frequency