MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Shane Macguire Grade: upto college level
        The noise level in a classroom in absence of the teacher is 50 dB when 50 student s are present. Assuming that on the average each student outputs same sound energy per second, what will be the noise level if the number of students is increased to 100?
3 years ago

Answers : (1)

Deepak Patra
askIITians Faculty
474 Points
										Sol. Let the intensity of each student be I.

According to the question
β base A = 10log base 10 50 l/l base 0 ; β base B = 10 log (100 l/l base 0)
= 10 l log(100 l/50 l) = 10 log base 10 2 = 3
So, β base A = 50 + 3 = 53 dB.
3 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete Physics Course - Class 12
  • OFFERED PRICE: Rs. 2,756
  • View Details
  • Complete Physics Course - Class 11
  • OFFERED PRICE: Rs. 2,968
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details