cumulative relative frequency

According to wave theory when light falls on a metal surface, energy is continuously distributed over the surface. All the free electrons receive light energy and when the energy received exceeds that of work function, an electron may escape the surface. If we user a low intensity source, it may ta..

>Consider the following example: The wages of the skilled workers in a factory are given below: Open intervals are used when extreme scores are given. Sometimes, one more column called cumulative frequency is obtained in frequency distributio..

. The distance travelled by the waves relative to the source in 1 second. If f is the frequency of the waves produced by the source, then f waves are accommodated in a distance S l A l . Since the observer recedes by a distance b in 1 second, the relative velocity of t..

. The sum of the two sine waves This can be put in a more useful form by using the relation for the sum of two cosines from trigonometry: is the modulation functions or "envelope" (the outer curve in the above figure). In this case, the modulation function happens to be a sine w..

Doppler Effect in Light - Whenever there is a relative motion between a source of light and the observer, the apparent frequency of light received by the observer is different from the true frequency of light emitted actually from the source of light. If a source of li..

. Initially, the path lengths are adjusted to be equal. The outer tube is pulled out till the sound intensity becomes minimum. The distance through which the tube has been slided will be l /4, since the path difference is l /2. By measuring this distance using a scale, l can be calculated. Assuming..

In 1900, Max Planck presented the results of his famous black body radiation experiments, which showed that light has a dual character, behaving like a particle as well as a wave. He gave the Quantum Theory of Radiation explaining electromagnetic radiation and energy. Its main features were: Ra..

In this theory, the rate constant is related to three factors Z, f and p by the equation k = Zfp b (19) where Z is the collision frequency f is the fraction of collisions having energy greater than the threshold energy and p is the fraction of the collisions that occurs with the..

. The stopping potential is related to the maximum kinetic energy of the ejected electrons. The fastest photoelectron as it reaches the anode has kinetic energy given by [K.E m a x - eV 0 ] ..... (1) where K.E m a x - energy of the electron when it leaves the emitter. eV 0 - increase in t..

The frequency ( n ) of emitted light is related to the energy difference of two levels ( D E) as E = 214.68 kJ mol - 1 , h = 39.79 x 10 - 1 4 kJ mol - 1 = 5.39 x 10 1 4 s - 1 8. The wavelength of first spectral line in the Balmer series is 6561 units. Calculate..