1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Two waves having equation x1 = $$a$$sin($$\omega$$t $$-$$ kx + $$\phi$$1), x2 = asin($$\omega$$t $$-$$kx + $$\phi$$2). If in the resultant wave the frequency and amplitude remain equal to amplitude of superimposing waves, the phase difference between them is
A
$${\pi \over 6}$$
B
$${{2\pi } \over 3}$$
C
$${\pi \over 4}$$
D
$${\pi \over 3}$$
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
The equation of a wave is represented by

y $$=$$ 10$$-$$4 sin(100t $$-$$ $${x \over {10}}$$) m. then the velocity of wave will be
A
100 m/s
B
4 m/s
C
1000 m/s
D
10 m/s
3
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
If the tension and diameter of a sonometer wire of fundamental frequency n is doubled and density is halved then its fundamental frequency will become
A
$${\pi \over 4}$$
B
$$\sqrt 2 n$$
C
n
D
$${n \over {\sqrt 2 }}$$
4
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
The equations of two waves acting in perpendicular directions are given as
x = $$a$$cos($$\omega$$t +$$\delta$$) and y = $$a$$cos($$\omega$$t + $$\alpha$$), where $$\delta$$ = $$\alpha$$ + $${\pi \over 2}$$, the resultant wave represents
A
a parabola
B
a circle
C
an ellipse
D
a straight line
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