Numericals Chapter 8 Class 11 Physics | 1st Year Physics Chapter 8 Numericals | Study with Me

Numericals Chapter 8 Class 11 Physics | FSc 1st Year Physics Chapter 8 Solved Numericals | Study with Me

00:00 Numerical 1
01:52 Numerical 2
02:35 Numerical 3
03:26 Numerical 4
05:48 Numerical 5
07:46 Numerical 6
12:10 Numerical 7
13:50 Numerical 8
16:29 Numerical 9
18:04 Numerical 10
20:56 Numerical 11
24:26 Numerical 12
30:02 Numerical 13


=====Animated Derivation Videos of Chapter 8 - Waves =====

1. Introduction to waves
   • Waves Class 11 Physics Chapter 8 | Introdu...  

2. Characteristics of Wave
   • Characteristics of Wave Class 11 Physics C...  

3. Speed of Sound by Newton and Laplace’s Correction
   • Speed of Sound Newton’s Assumption and Lap...  

4. Factors affecting speed of sound
   • Factors Affecting Speed of Sound in Air Cl...  

5. Formulas of Doppler Effect - How to remember
   • Dopplers Effect class 11 | 11th Physics ch...  

1. What are the wavelengths of a television station which transmits vision on 500 MHz and sound on 505 MHz respectively? Take speed of electromagnetic waves as 3 x 108 m/s.
2. A person on the sea shore observes that 48 waves reach the shore in one minute. If the wavelength of the waves is 10 m, then find velocity of waves
3. In a ripple thank 500 waves passes through a certain point in 10s , if the speed of the wave is 3.5 m/s, find the wavelength of the waves.
4. A string of guitar 1.3 m long vibrates with 4 nodes, 2 of them at the two ends. Find the wavelength and speed of the wave in the string, if it vibrates at 500 Hz.
5. A tension of 400 N causes a 300 g wire of length 1.6m to vibrate with a frequency of 40 Hz. What is the wavelength of the transverse waves?
6. Compare the theoretical speeds of sound in hydrogen (MH = 2.0 g/mol, H = 1.4) with helium (MHe = 4.0 g/mol, He = 1.66 & R=8334 jk-1 mol) at 0oC .
7. The speed of sound in air at 0oC is 332 m/s . What will be the speed of sound at 22oC.
8. Two tuning forks P and Q give 4 beats per second. On loading Q lightly with wax, we get 3 beats per second. What is the frequency of Q before and after loading if the frequency of P is 512 Hz.
9. On a sunny day, the speed of sound in the air is 340 m/s, two tuning forks A & B are sounded simultaneously. The wave length of the sounds emitted are 1.5m and 1.68m respectively. How many beats will produce per second.
10. A sound source vibrates at 200 Hz and is receding from a stationary observer at 18 m/s. If the speed of sound is 331 m/s then what frequency does the observer hear?
11. Suppose a train that has a 150 Hz horn, is moving at 35 m/s in still air on a day when the speed of sound is 340 m/s.
(a) What frequencies are observed by a stationary person at the side of the tracks as the train approaches and after it passes?
(b) What frequency is observed by the train’s engineer travelling on the train?
12. The first overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe 3.6 m length. What is the length of the open organ pipe?
13. What length of open pipe will produce a frequency of 1200 Hz as its first overtone on a day when the speed of sound is 340 m/s.
Formulas of Doppler Effect
Source moving towards listener
Source moving away from listener
Listener moving towards source
Listener moving away from source
Source and Listener both moving towards each other
Source and Listener both moving away from each other

Class 11
Physics
Chapter 8
Waves
11th Class
1st Year
First year
Federal Board
KPK Board
Numerical Problems Chapter 8
Khyber Pakhtunkhwa Textbook board Peshawar
Balochistan Textbook board Quetta
Balauchistan Textbook board Quetta
New Book Physics Class 11 Numericals
All Numerical Problems Solution Chapter 8
Numerical Problems Chapter 8 Class 11 Physics First Year 1st Year Waves
All solved numericals of Chapter 8 Waves class 11

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