Millionaire Mode

Interference of two waves - class-XI

Question 1 of 13

Four sources of sound each of sound level 10 dB are sounded together in phase, the resultant intensity level will be ($log _{10}2 = 0.3$)

  1. 40 dB
  2. 26 dB
  3. 22 dB
  4. 13 dB

Prize Money

15₹7 Crores
14₹1 Crore
13₹50,00,000
12₹25,00,000
11₹12,50,000
10₹6,40,000
9₹3,20,000
8₹1,60,000
7₹80,000
6₹40,000
5₹20,000
4₹10,000
3₹5,000
2₹2,000
1₹1,000