Emerson's Physics

Emerson’s Physics features Mr. Emerson John, a higher secondary school physics teacher who is also the principal of a reputed school in Chennai. This channel covers physics lessons related to State Board, CBSE, and competitive exams including JEE and NEET. He has been honored with the Best Teacher award (Dr. Radhakrishnan Award) by the Tamil Nadu Chief Minister- M. K. Stalin in the year 2020-21.
Mr. Emerson John holds a MSc. B.Ed in Physics and has an experience in the teaching field for 35 years. He has an extensive experience in writing textbooks, worksheets, and lab practical materials. Over his career, he has produced thousands of doctors and engineers. He is also currently the President of Heads of Anglo-Indian Schools Association, Tamil Nadu.
Those who need any kind of help related to competitive exam physics can feel free to contact Mr. Emerson John at

Ph : 044- 2441 2441
Mail: [email protected]

Two sound waves with wavelengths 5.0cm and 5.5m respectively, each propagates in a gas|FAQ in NEET
Two sound waves with wavelengths 5.0cm and 5.5m respectively, each propagates in a gas|FAQ in NEET
Two vibrating tuning forks produce waves given by y1=4 sin500πt and y2=2 sin506πt.Number|FAQ in NEET
Two vibrating tuning forks produce waves given by y1=4 sin500πt and y2=2 sin506πt.Number|FAQ in NEET
Each of the 2 strings of length 51.6cm and 49.1cm are tensioned separately by 20N force|FAQ in NEET
Each of the 2 strings of length 51.6cm and 49.1cm are tensioned separately by 20N force|FAQ in NEET
A tuning fork of frequency 512Hz makes 4beats per second with the vibrating string of a piano. The
A tuning fork of frequency 512Hz makes 4beats per second with the vibrating string of a piano. The
Wave has simple harmonic motion whose period is 4seconds while another wave which also possesses
Wave has simple harmonic motion whose period is 4seconds while another wave which also possesses
Three sound waves of equal amplitudes have frequencies(n-1), n, (n+1). They superimpose|FAQ in NEET
Three sound waves of equal amplitudes have frequencies(n-1), n, (n+1). They superimpose|FAQ in NEET
In a guitar, two strings A and B made of same material are slightly out of tune and produce beats
In a guitar, two strings A and B made of same material are slightly out of tune and produce beats
A closed organ pipe(closed at one end) is excited to support the third overtone. It is found that
A closed organ pipe(closed at one end) is excited to support the third overtone. It is found that
A stretched string resonates with tuning fork frequency 512Hz when length of the string is 0.5m. The
A stretched string resonates with tuning fork frequency 512Hz when length of the string is 0.5m. The
A stationary wave is represented by y=Asin(100t) cos (0.01x), where y and A are in millimetres, t is
A stationary wave is represented by y=Asin(100t) cos (0.01x), where y and A are in millimetres, t is
A wave of frequency 100Hz travels along a string towards its fixed end. When this wave travels back
A wave of frequency 100Hz travels along a string towards its fixed end. When this wave travels back
The length of a sonometer wire AB is 110cm. Where should the two bridges be placed from A to divide
The length of a sonometer wire AB is 110cm. Where should the two bridges be placed from A to divide
A cylindrical tube, open at both ends has fundamental frequency f in air. The tube is dipped vertica
A cylindrical tube, open at both ends has fundamental frequency f in air. The tube is dipped vertica
Standing waves are produced in 10m long stretched string. If the string vibrates in 5 segments and
Standing waves are produced in 10m long stretched string. If the string vibrates in 5 segments and
A standing wave having 3nodes and 2 antinodes is formed between two atoms having a distance 1.21A
A standing wave having 3nodes and 2 antinodes is formed between two atoms having a distance 1.21A
A string is cut into three parts, having fundamental frequencies n1,n2,n3 respectively.Then original
A string is cut into three parts, having fundamental frequencies n1,n2,n3 respectively.Then original
If the tension and diameter of a sonometer wire of fundamental frequency n is doubled and density is
If the tension and diameter of a sonometer wire of fundamental frequency n is doubled and density is
When a string is divided into three segments of length l1,l2 and l3 the fundamental frequencies of
When a string is divided into three segments of length l1,l2 and l3 the fundamental frequencies of
The length of the wire between two ends of a sonometer is 100cm. What should be the positions of two
The length of the wire between two ends of a sonometer is 100cm. What should be the positions of two
If we study the vibration of a pipe open at both ends, then the following statement is|FAQ in NEET
If we study the vibration of a pipe open at both ends, then the following statement is|FAQ in NEET
Two identical piano wires, kept under the same tension T have a fundamental frequency of 600Hz. The
Two identical piano wires, kept under the same tension T have a fundamental frequency of 600Hz. The
Two sources of sound placed close to each other, are emitting progressive waves given by|FAQ in NEET
Two sources of sound placed close to each other, are emitting progressive waves given by|FAQ in NEET
A source of unknown frequency gives 4beats/s when sounded with a source of known frequen|FAQ in NEET
A source of unknown frequency gives 4beats/s when sounded with a source of known frequen|FAQ in NEET
A string is stretched between fixed points separated by 75.0cm.It is observed to have resonant frequ
A string is stretched between fixed points separated by 75.0cm.It is observed to have resonant frequ
The fundamental frequency of a closed organ pipe of length 20cm is equal to the second|FAQ in NEET
The fundamental frequency of a closed organ pipe of length 20cm is equal to the second|FAQ in NEET
A 5.5 metre length of string has a mass of 0.035kg. If the tension in the string in 77N|FAQ in NEET
A 5.5 metre length of string has a mass of 0.035kg. If the tension in the string in 77N|FAQ in NEET
Velocity of sound waves ina ir is 330m/s. For a particular sound wave in air,a path difference of 40
Velocity of sound waves ina ir is 330m/s. For a particular sound wave in air,a path difference of 40
The equations of two wavea acting in perpendicular directions are given as|FAQ in NEET
The equations of two wavea acting in perpendicular directions are given as|FAQ in NEET
Two waves having equation, if in the resultant wave the frequency and amplitude remain|FAQ in NEET
Two waves having equation, if in the resultant wave the frequency and amplitude remain|FAQ in NEET
Two periodic waves of intensities L1 and l2 pass through a region at the same time in the same direc
Two periodic waves of intensities L1 and l2 pass through a region at the same time in the same direc