Question
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Answer (Detailed Solution Below)
Option 3 : $20\ \text{dB}$ / $20\ \text{dB}$
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Detailed Solution
सही उत्तर $20\ \text{dB}$ / $20\ \text{dB}$ है।
Key Points
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prepsnap.in • Part -AQuestion:
If the intensity of a sound is increased by a factor of $100$, its sound level rises by / यदि किसी ध्वनि की तीव्रता $100$ गुना बढ़ा दी जाए, तो ध्वनि स्तर बढ़ेगा
1.
$100\ \text{dB}$ / $100\ \text{dB}$
2.
$10\ \text{dB}$ / $10\ \text{dB}$
3.
$20\ \text{dB}$ / $20\ \text{dB}$
4.
$2\ \text{dB}$ / $2\ \text{dB}$
Correct Answer: $20\ \text{dB}$ / $20\ \text{dB}$
$\Delta L = 10\log_{10}(I_2/I_1) = 10\log_{10}(100) = 20\ \text{dB}$. / $\Delta L = 10\log_{10}(I_2/I_1) = 10\log_{10}(100) = 20\ \text{dB}$।
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