Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
1. A policeman on duty detects a drop of 15% in the pitch of the horn of a car as it crosses him. Caalculate the speed of the car, if the velocity of sound is 330 m/s.
2. Calculate the temperature at which the speed of sound will be 2 times its value at 0 degree celsius.
frequency heard by the policemen is 100-15=85% of total
let n be the freuency of sound emmited by car horn
we can use ,N=nV/V-v
here N is appherent frequency ,V velocity of sound ,v velocity of car and n frequency of horn
v= 58.2m/s
speed of sound is directly proportional to underoot T
v=k(t^1/2)
v1/v2=(t1/t2)^1/2
T=1092k
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question
Win Gift vouchers upto Rs 500/-
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !