Physics · 2022
JEE Main · 26 July 2022, Shift 1 · Q54
When a car is approaching the observer, the frequency of horn is 100 Hz. After passing the observer, it is 50 Hz. If the observer moves with the car,…
When a car is approaching the observer, the frequency of horn is $\displaystyle 100$ Hz . After passing the observer, it is $\displaystyle 50$ Hz . If the observer moves with the car, the frequency will be $\displaystyle \frac{x}{3} \mathrm{~Hz}$ where $\displaystyle x=$ \_\_\_\_.
Official answer
200
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.