1
BITSAT 2022
+3
-1

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 of 600 Hz to detect A and receives a reflected sound of frequency $$\nu$$. The of $$\nu$$ is

[Speed of sound in water = 1500 ms$$-$$1]

A
613.7 Hz
B
6137 Hz
C
62 Hz
D
539 Hz
2
BITSAT 2022
+3
-1

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 that in B. The ratio of the velocities of the waves in A and B is

A
1 : 2
B
1 : $$\sqrt2$$
C
1 : 2$$\sqrt2$$
D
3 : 2$$\sqrt2$$
3
BITSAT 2022
+3
-1

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. If the speed of wave in string AB is v1 and in CD is v2, then $${{{v_1}} \over {{v_2}}}$$ is

A
1
B
$$\sqrt2$$
C
2
D
1$$\sqrt2$$
4
BITSAT 2021
+3
-1

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 of the following is correct?

A
v = 5 cm/s
B
$$\lambda$$ = 18 cm
C
A = 0.04 cm
D
f = 50 Hz
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