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Chapter: 16.2 / Q: 19
Which of the following conditions may be corrected by a diverging (concave lens)?
Chapter: 16.3 / Q: 1
Which of the following statements about sound and light is INCORRECT?
Chapter: 16.3 / Q: 2
What is the measure known as “sound level”?
Chapter: 16.3 / Q: 3
What is the speed of sound in water at 20 °C?
Chapter: 16.3 / Q: 4
How may sound waves be characterised? As:
Chapter: 16.3 / Q: 5
If the frequency of a sound is 1000 Hz, what will its period will be?
Chapter: 16.3 / Q: 6
A sound wave of frequency 1000 Hz is travelling through air with a speed of 330 m/s. What is its wavelength?
Chapter: 16.3 / Q: 7
As the frequency of a sound in air is made to decrease, which of the following will happen?
Chapter: 16.3 / Q: 8
What is the unit called the decibel (dB) used in the measurement of?
Chapter: 16.3 / Q: 9
An increase in sound level of 20 dB represents an increase in intensity (W/m2 ) of:
total questions: 1878

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