MCQ
A musical scale is constructed by providing intermediate frequencies between a note and its octave which
- AForm an arithmetic progression
- BForm a geometric progression
- ✓Bear a simple ratio with their neighbours
- DForm a harmonic progression
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$B=\frac{4}{\pi} \times 10^{-3}\, {T}\left(1-\frac{{t}}{100}\right)$
The energy dissipated by the coil before the magnetic field is switched off completely is $E=.....\,{m} J.$