physics practicals for class 11

In order to take a safe turn, the cyclist has to bend a little from his vertical position. In this case, a component of the reaction provides the required centripetal force. If q is angle made by the cyclist with the vertical th..

[Newton's law of gravitation]. The values of v r and remain practically constant while the fuel is being consumed but the remaining mass m continually decreases. So, acceleration continues to increase until all the fuel is burnt up. Equation (1) can be rewritten in terms of time t. Let m ..

. The mercury reservoir R is so adjusted that the mercury in the branch B of the U-tube is at a fixed reference mark E to keep the confined gas at a constant volume. Then, we read the height of the mercury in the A branch. The pressure of the confined gas is the difference of the heights of the mer..

. For example chlorine is composed of two isotopes of masses 34.98U and 36.98U, which are nearly integral multiples of the mass of hydrogen atom. Their relative abundances are 75.4 and 24.6 percent respectively. Mass of natural chlorine atom can be found as = 35.47. The isotope can occur either nat..

Period of a Simple Pendulum - A simple pendulum is an arrangement in which a point mass is suspended by an inextensible weightless string in a uniform gravitational field. This is an ideal system which cannot be realized in practice. However, a pendulum consisting of a small but relativel..

Frictional Effects - An oscillator, in actual practice, almost always lies in a resisting medium, like air, oil etc., where part of its energy is dissipated in overcoming the opposing frictional or viscous forces and its amplitude, therefore, goes on decreasing progressively. Such forces,..

A cavity with walls made of any material, with a small opening, is an excellent black body. This is Ferry's black body Consider a hollow enclosure with its walls maintained at temperature T. The enclosure is filled with thermal radiation. Let I be the energy per unit time falling per unit area of a..

The submarine is another application of 'Archimedes Principle'. On surface, the submarine floats, with its conning tower and most of the deck, being clear of the water. ..

Practical Applications of Reflection of Sound - Some applications of the principle of Reflection of Sound are: (1) Megaphone, (2) Hearing Board, (3) Sound Board..