AP EAPCET 2024 - 19th May Evening Shift | Waves Question 8 | Physics

The speed of a wave on a string is $150 \mathrm{~ms}^{-1}$ when the tension is 120 N . The percentage increase in the tension in order to raise the wave speed by $20 \%$ is

AP EAPCET 2024 - 18th May Morning Shift

MCQ (Single Correct Answer)

-0

Two stretched strings $A$ and $B$ when vibrated together produce 4 beats per second. If the tension applied to the string $A$ increased. The number of beats produced per second is increased to 7. If the frequency of string $B$ is 480 Hz initially, the frequency of string $A$ is

473 Hz

476 Hz

484 Hz

487 Hz

AP EAPCET 2022 - 5th July Morning Shift

MCQ (Single Correct Answer)

-0

Two cars are moving towards each other at the speed of $$50 \mathrm{~ms}^{-1}$$. If one of the cars blows a horn at a frequency of 250 Hz , the wave length of the sound perceived by the driver of the other car is

(Speed of sound in air $$=350 \mathrm{~ms}^{-1}$$)

18.7 cm

105 cm

75 cm

10.5 cm

AP EAPCET 2022 - 4th July Evening Shift

MCQ (Single Correct Answer)

-0

Speed of sound in air near room temperature is approximately

$$3.4 \times 10^2 \mathrm{~ms}^{-1}$$

$$34 \mathrm{~ms}^{-1}$$

$$34 \mathrm{~kms}^{-1}$$

$$3.4 \mathrm{~km} \mathrm{~s}^{-1}$$

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