## MCQ (Single Correct Answer)

In a resonance coloum first and second resonance are obtained at depths 24 cm and 78 cm the third resonance will be obtained at depth.

A submarine A travelling at 17 m/s is being chased along the line of its velocity by another submarine B travelling at 34 m/s. B sends a sonar signal ...

Transverse waves of the same frequency are generated in two steel wires A and B. The diameter of A is twice that of B and the tension in A is half tha...

In the diagram shown below, both the strings AB and CD are made of same material and have same cross-section. The pulleys are light and fictionless. I...

The equation of progressive wave is given by $$Y = \sin \left[ {x\left( {{t \over 5} - {x \over 9}} \right) + {\pi \over 6}} \right]$$ cm. Which one ...

Two cars approach a stationary observer from opposite sides as shown in the figure.
The observer hears no beats. If the frequency of the horn of the ...

The vibrations of a string of length 60 cm fixed at both ends are represented by the equation
$$y = 4\sin \left( {{{\pi x} \over {15}}} \right)\cos (9...