A train approaching a hill at a speed of 36 kmph sounds a whistle of frequency 500 Hz when it is at a distance of 1 km. A wind blows at 36 kmph in the direction of the motion of the train. Find (i) the frequency of the whistle as heard by an observer on the hill, (ii) the distance from the hill at which the echo from the hill is heard by the driver and its frequency. Velocity of sound `= 1200 kmph`

A train approaching a hill at a speed of 40 km//hr sounds a whistle of frequency 580 Hz when it is at a distance of 1km from a hill. A wind with a speed of 40km//hr is blowing in the direction of motion of the train Find (i) the frequency of the whistle as heard by an observer on the hill, (ii) the distance from the hill at which the echo from the hill is heard by the driver and its frequency. (Velocity of sound in air = 1, 200 km//hr )

A train approaching a hill at a speed of 40 km//hr sounds a whistle of frequency 580 Hz when it is at a distance of 1km from a hill. A wind with a speed of 40km//hr is blowing in the direction of motion of the train Find (i) the frequency of the whistle as heard by an observer on the hill, (ii) the distance from the hill at which the echo from the hill is heard by the driver and its frequency. (Velocity of sound in air = 1, 200 km//hr )

A train approaching a hill at a speed of 40 km//hr sounds a whistle of frequency 580 Hz when it is at a distance of 1km from a hill. A wind with a speed of 40km//hr is blowing in the direction of motion of the train Find (i) the frequency of the whistle as heard by an observer on the hill, (ii) the distance from the hill at which the echo from the hill is heard by the driver and its frequency. (Velocity of sound in air = 1, 200 km//hr )

A train approaching a hill at a speed of 40 km//hr sounds a whistle of frequency 580 Hz when it is at a distance of 1km from a hill. A wind with a speed of 40km//hr is blowing in the direction of motion of the train Find (i) the frequency of the whistle as heard by an observer on the hill, (ii) the distance from the hill at which the echo from the hill is heard by the driver and its frequency. (Velocity of sound in air = 1, 200 km//hr )

A train approching a hill at a speed of 40 km//hr sounds a whitstle of frequency 600 Hz when it is at a distance of 1 km from a hill. A wind with a speed of 40 km//hr is blowing in the direction of motion of the train. Find, (a) The frequency of the whistle as heard by an observer on the hill. (b) the distance from the hill at which the echo from the hill is heard by the driver and its frequency (Veocity of sound in air = 1200 km//hr )

A train approaching a hill at a speed of 60 km//hour sounds a whistle of frequency 600Hz when it is distance of 1km from the hill. Wind is blowing in the direction of the train with a speed of 60 km//h Find the frequency of the whistle heard by an observer on the hill:speed of sound in air 1200km/h)