AIEEE 2002 | Waves Question 130 | Physics

A tuning fork arrangement (pair) produces $$4$$ beats/sec with one fork of frequency $$288$$ $$cps.$$ A little wax is placed on the unknown fork and it then produces $$2$$ beats/sec. The frequency of the unknown fork is

$$286$$ $$cps$$

$$292$$ $$cps$$

$$294$$ $$cps$$

$$288$$ $$cps$$

AIEEE 2002

MCQ (Single Correct Answer)

-1

Tube $$A$$ has bolt ends open while tube $$B$$ has one end closed, otherwise they are identical. The ratio of fundamental frequency of tube $$A$$ and $$B$$ is

$$1:2$$

$$1:4$$

$$2:1$$

$$4:1$$

AIEEE 2002

MCQ (Single Correct Answer)

-1

A wave $$y=a$$ $$\sin \left( {\omega t - kx} \right)$$ on a string meets with another wave producing a node at $$x=0.$$ Then the equation of the unknown wave is

$$y = a\,\sin \,\left( {\omega t + kx} \right)$$

$$y = - a\,\sin \,\left( {\omega t + kx} \right)$$

$$y = a\,\sin \,\left( {\omega t - kx} \right)$$

$$y = - a\,\sin \,\left( {\omega t - kx} \right)$$

AIEEE 2002

MCQ (Single Correct Answer)

-1

When temperature increases, the frequency of a tuning fork

increases

decreases

remains same

increases or decreases depending on the material