AP EAPCET 2022 - 5th July Morning Shift | Waves Question 10 | Physics

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

AP EAPCET 2021 - 20th August Morning Shift

MCQ (Single Correct Answer)

-0

A string fixed at both ends vibrate in 5 loops as shown in the figure. The total number of nodes and anti-nodes respectively are

AP EAPCET 2021 - 20th August Morning Shift Physics - Waves Question 13 English

6 and 5

6 and 10

2 and 5

10 and 6

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