Question
Consider the following statements: 1. A flute of
smaller length produces waves of lower 2. Sound travels in rocks in the form of longitudinal elastic waves Which of the statements given above is/are correct?Solution
The flute is a musical instrument of the woodwind family. A flute of smaller length produces waves of higher frequency. Sound waves travels through medium even through extremely dense medium like rocks in the form of longitudinal waves only. A good example is the shock wave from an Earthquake, which can be heard hundreds of miles away from the epicenter after travelling through rocks in the ground.
69, 35.5, 39.5, 68.25, 152.5, ?
140, 146, 158, 176, ?, 230
Find the missing number in the given number series.
?, 26, 38, 70, 130, 226
18    ?    20    13     22     11
What will come in place of (?) question mark in the given number series.
11, 6, 7, 12, 26, ?
84, 105, ?, 168, 210, 259
18, 30, 50, 102, 282, ?
31, 60, 118, 234, 466, ?
4, 4, 8, 32, 256, ?
21, 37, 73, 137, ?, 381
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