Physics
Two notes are produced from two different musical instruments, such that they have same loudness and same pitch. The produced notes differ in their:
- Waveform
- Frequency
- Wavelength
- Speed
Related Questions
Choose the correct relation for e.m.f. (ε) and terminal voltage V:
- ε = V [always]
- V > ε [always]
- V < ε [when the cell is in use]
- None of these
A concave lens produces only …………… image.
- real, enlarged
- virtual, enlarged
- virtual, diminished
- real, diminished
When a body vibrates under a periodic force, the vibrations of the body are always:
- natural vibrations
- damped vibrations
- forced vibrations
- resonant vibrations
When a current I flows through a wire of resistance R for time t then the electrical energy produced is given by:
- I2Rt
- IR2t
- IRt
- IRt2