Physics
A slim branch of a tree is pulled and released. It makes …………… vibrations.
- damped
- natural
- forced
- resonant
Sound
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Answer
damped
Reason — Damped vibrations occur when the energy of the vibrating system is gradually dissipated over time, causing the amplitude of the vibrations to decrease and in the case of slim branch of a tree, the amplitude of vibrations decrease due to resistive forces.
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Related Questions
The frequency f of the note produced by a string can be increased by :
- decreasing the length l of the string
- decreasing the radius r of the string
- increasing the tension T of the string
- All of these
If l is the length of the string stretched between its ends, the wavelength of different modes in Figure (1), (2) and (3) will be :
- 2l/2, 2l, 2l/3
- 2l/3, 2l/2, 2l
- 2l, 2l/2, 2l/3
- 2l, 21/3, 2l/2
A body is vibrating under the influence of an external periodic force of frequency exactly equal to the natural frequency of the vibrations of the body. It executes :
- damped vibrations
- forced vibrations
- resonant vibrations
- natural vibrations
At resonance, a loud sound is heard because the body vibrating with a large …………… sends forth a large amount of energy in the medium.
- amplitude
- frequency
- wavelength
- time period