10 2 A square ground of side has a circular running track of

Last updated: 6/1/2023

10 2 A square ground of side has a circular running track of radius 14 The centre of square ground coincides with the centre of circular track A man is running on the circular track the angular velocities of line joining man to centre of the circle is 22 rad s while a car is running on adjacent road as shown The car moves in such a way that the car man and centre lie on a straight line always A source of sound is kept at the centre of circular track The frequency of sound produced by source is 300 Hz The velocities of sound in air is 330 m s Now answer the following questions width of the track is ignorable 53 E14 If at any time t line joining man to centre of the track makes angle 9 with y axis Find the value of e at which an observer in the car observes minimum frequency A 30 C 60 B 45 D 37