1
AIEEE 2002
+4
-1
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
A
$$286$$ $$cps$$
B
$$292$$ $$cps$$
C
$$294$$ $$cps$$
D
$$288$$ $$cps$$
2
AIEEE 2002
+4
-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
A
$$1:2$$
B
$$1:4$$
C
$$2:1$$
D
$$4:1$$
3
AIEEE 2002
+4
-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
A
$$y = a\,\sin \,\left( {\omega t + kx} \right)$$
B
$$y = - a\,\sin \,\left( {\omega t + kx} \right)$$
C
$$y = a\,\sin \,\left( {\omega t - kx} \right)$$
D
$$y = - a\,\sin \,\left( {\omega t - kx} \right)$$
4
AIEEE 2002
+4
-1
When temperature increases, the frequency of a tuning fork
A
increases
B
decreases
C
remains same
D
increases or decreases depending on the material
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