JEE Mains 05-Sep-2020 Shift 2 Solved Paper

Section: Physics

Question : 8 of 75

Marks: +1, -0

A driver in a car, approaching a vertical wall notices that the frequency of his car horn, has changed from 440Hz to 480 Hz, when it gets reflected from the wall. If the speed of sound in air is 345m∕s, then the speed of the car is

[5 Sep 2020 Shift 2]

36 km∕hr
24 km∕hr
18 km∕hr
54 km∕hr

Validate

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