Question
In the musical octave ‘Sa’, ‘Re’, ‘Ga’
✓
Answer
(b)The frequency of note ‘Sa’ is $256 Hz$ while that of note ‘Re’ and ‘Ga’ respectively are $288 Hz$ and $320 Hz.$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The periodic time of a body executing simple harmonic motion is $3\, sec$. After how much interval from time $t = 0$, its displacement will be half of its amplitude ..... $\sec$
→A count rate meter shows a count of $240$ per minute from a given radioactive source. One hour later the meter shows a count rate of $30$ per minute. The half-life of the source is ..........$min$
→On fission a $U ^{235}$ nucleus releases $3 \times 10^{-11} ],J$ of energy. In a $1 \,GW$ nuclear reactor $4.2 \%$ of this energy is converted to useful energy. The $U ^{235}$ consumed (in grams) in half an hour is closest to (Avogadro number $N _{ A }=6.023 \times 10^{23}$ )
→A ball is spun with angular acceleration $\alpha=6 t ^{2}-2 t$ where $t$ is in second and $\alpha$ is in $rads$ $^{-2}$. At $t=0$, the ball has angular velocity of $10\,rads$ $^{-1}$ and angular position of $4\,rad$. The most appropriate expression for the angular position of the ball is
→In the equation ${ }_{13}^{27} Al +{ }_2^4 He \longrightarrow{ }_{15}^{30} P + X ,$ The correct symbol for $X$ is
→$A$ opaque card is held over the lower half of a converging lens as shown in figure. Which picture is best shows the image that appears on the screen.
→Out of the following which one is not a possible energy for a photon to be emitted by hydrogen atom according to Bohr's atomic model?.....$eV$
→In the reported figure, two bodies $A$ and $B$ of masses $200\, {g}$ and $800\, {g}$ are attached with the system of springs. Springs are kept in a stretched position with some extension when the system is released. The horizontal surface is assumed to be frictionless. The angular frequency will be $.....\,{rad} / {s}$ when ${k}=20 \,{N} / {m} .$
→The respective number of significant figures for the numbers $23.023, 0.0003 $ and $2.1 \times 10^3$ are
→When a uranium isotope ${ }_{92}^{235} U$ is bombarded with a neutron, it generates ${ }_{36}^{89} Kr$, three neutrons and:
→