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question_answer1) The speed of sound in air at \[0{}^\circ C\] is approximately
question_answer2) If \[{{V}_{g}},{{V}_{l}},{{V}_{s}}\] represent the speed of sound in a gas, liquid and solid respectively then
question_answer3) The speed of light in air is _____
question_answer4) Speed of sound in air is independent of charge in
question_answer5) Speed of sound depends on
question_answer6) The speed of sound is 330 m/s and that of light is \[^{3X}{{10}^{8}}m/s\] . The ratio of speed of sound to light is approximately
question_answer7) A man standing near a cliff with a seconds pendulum fires a gun when the pendulum is at the mean position and hears the echo when it just reaches the extreme position. If the speed of sound is \[340m{{s}^{-1}}\], calculate his distance from the cliff.-
question_answer8) A man stands at a distance of 255m from a cliff. He fires a gun and heard the echo after 1.5 seconds. What will be the velocity of the sound?
question_answer9) A boy stands 85 m in front of a high wall and then blows a whistle. Calculate the time interval when he hears an echo. (speed of sound = 340 m/s)
question_answer10) An echo returned in 3s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342 m/s?
question_answer11) A man stands in between two cliffs and fires a gun. He hears two successive echoes after 3 seconds and 5 seconds. What is the distance between two cliffs? [speed of sound\[=\text{ }330m{{s}^{-1}}\]]
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