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Class XI Physics Waves 1
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Question 1
A sine wave has an amplitude A and a wavelength λ. Let V be the wave velocity, and v be maximum velocity of a particle in the medium.
Question 2
The velocity of sound in air at20 °C and 1 atm pressure is 344.2 m/s. At 40 °C and 2 atm pressure, the velocity of sound in air is approximately
Question 3
A long string having a cross-sectional area 0.80 mm2 and density 12.5 g/cm3 is subjected to a tension of 64 N along the X-axis. One end of the string is attached to a vibrator moving in transverse direction. At t = 0, the source is at maximum displacement y = 1 cm. Find the speed of wave travelling on the string.
Question 4
Sound waves have the following frequencies that are audible to human beings-
Question 5
Consider the following statements about sound passing through a gas.
A. The pressure of the gas at a point oscillates in time.
B. The position of a small layer of the gas oscillates in time.
A. The pressure of the gas at a point oscillates in time.
B. The position of a small layer of the gas oscillates in time.
Question 6
Find the change in the volume of 1 Liter kerosene when it is subjected to an extra pressure of 2 × 105 N/m2 from the following data. Density of kerosene is 800 kg/m3 and speed of sound in kerosene is 1330 m/s.
Question 7
The speed of sound in a medium depends on-
Question 8
To observe diffraction, the size of the obstacle
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Oct 24JEE & BITSAT