AP EAPCET 2024 - 18th May Morning Shift | Waves Question 9 | Physics

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

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

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

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

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

AP EAPCET 2022 - 4th July Morning Shift

MCQ (Single Correct Answer)

-0

A body is suspended from a string of length 1 m and mass 2 g. The mass of the body to produce a fundamental mode of 100 Hz frequency in the string is (Acceleration due to gravity $$=10 \mathrm{~ms}^{-2}$$)

80 g

4 kg

400 g

8 kg

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