MCQ
Two tuning forks of frequency 250 Hz and 256 Hz produce beats. If a maximum is produced just now, after how much time the minimum is produced at the same place:
- A$\frac{1}{6} s$
- B$\frac{1}{12} s$
- C$\frac{1}{24} s$
- D0.25 s
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
A vehicle with a horn of frequency $n$ is moving with a velocity of $30\, m/s$ in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency $n + {n_1}$. Then (if the sound velocity in air is $300\, m/s$)
→The black body spectrum of an object $O _1$ is such that its radiant intensity (i.e. intensity per unit wavelength interval) is maximum at a wavelength of $200\,nm$. Another object $O _2$ has the maximum radiant intensity at $600\,nm$. The ratio of power emitted per unit area by source $O _1$ to that of source $O _2$ is
→A particle is projected from the mid-point of the line joining two fixed particles each of mass $m.$ If the distance of separation between the fixed particles is $l,$ the minimum velocity of projection of the particle so as to escape is equal to
→A ball of mass $100 \,g$ is dropped from a height $h =$ $10\, cm$ on a platform fixed at the top of vertical spring (as shown in figure). The ball stays on the platform and the platform is depressed by a distance $\frac{ h }{2}$. The spring constant is.......... $Nm^{-1}$ . (Use $g=10\, ms ^{-2}$ )
→Two forces of 2 and 3 newton are acting perpendicular to each other on a particle. Their resultant force will make an angle with the force of 3 newton
A heavy object has $.......$ gravitational potential energy than a lighter one.
→Two sound waves of slightly different frequencies propagating in the same direction produce beats due to:
A ball is thrown from a point with a speed ${v_o}$ at an angle of projection $\theta $. From the same point and at the same instant a person starts running with a constant speed ${v_o}/2$ to catch the ball. Will the person be able to catch the ball? If yes, what should be the angle of projection
→Two wires $‘A’$ and $‘B’$ of the same material have radii in the ratio $2 : 1$ and lengths in the ratio $4 : 1$. The ratio of the normal forces required to produce the same change in the lengths of these two wires is
→A mass of $5\ kg$ is moving along a circular path of radius $1m.$ If the mass moves with $300$ revolutions per minute, its kinetic energy would be:
→