Physics class 10 chapter 11 numericals | physics class 10 chapter 2 numericals | fazal academy
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In this video, i'll teach you physics numericals Class 10 Federal board new book national book foundation.
1. In a busy street, traffic noise has intensity of 10^ -5 Wm^-2. Find the intensity level in decibel.
2. Mosquito buzzing has intensity level of 40 dB, calculate the intensity of this buzzing sound.
3. What is intensity level of threshold of hearing and threshold of pain?
4. Speed of sound waves in water at 25 °C is 1480 m/s. If their wavelength is 70 cm, find the frequency of these sound waves?
5. What is speed of sound at 15 °C in air if speed of sound is 332 m/s at 0 °C?
6. Find the range of wavelengths for audible sounds if the minimum frequency is 20 Hz and maximum frequency is 20kHz.
7. During thunderstorm, thunder sound is heard after 3 seconds of lightning flash. Find the distance of clouds from ground. (Speed of sound = 340 m/s)
8. SONAR (sound navigation and ranging system) sends ultrasound signal towards sea bed. It is received back after 5.3 s. If speed of sound in sea water is 1550 m/s. Find the depth of sea bed.
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Numericals Class 10 Physics Chapter 11 | Class 10 Physics New Book | Physics Class 10 Chapter 11 |
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