1
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-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
A
473 Hz
B
476 Hz
C
484 Hz
D
487 Hz
2
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-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 $$=350 \mathrm{~ms}^{-1}$$)

A
18.7 cm
B
105 cm
C
75 cm
D
10.5 cm
3
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Speed of sound in air near room temperature is approximately

A
$$3.4 \times 10^2 \mathrm{~ms}^{-1}$$
B
$$34 \mathrm{~ms}^{-1}$$
C
$$34 \mathrm{~kms}^{-1}$$
D
$$3.4 \mathrm{~km} \mathrm{~s}^{-1}$$
4
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-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 $$=10 \mathrm{~ms}^{-2}$$)

A
80 g
B
4 kg
C
400 g
D
8 kg
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