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Q Define threshold frequency?
The minimum frequency of incident radiation lower which the photoelectric emission isn't possible completely but high the intensity of incident radiation may be. The threshold frequency is dissimilar for different metals.
Two parallel plates having a p.d. of 200V among them are spaced 0.8mm apart. What is the electric field strength? Find also the flux density when the dielectric among the p
A simple pendulum is 4.00 m long. (a) What is the period of simple harmonic motion for this pendulum if it is hanging in an elevator accelerating upward at 7.00m/s 2 ? (b) Wha
A swimmer swims across a 20-meter-wide river at 0.3 m/s. The river is running at 0.1 m/s. What is resultant velocity of the swimmer, and at what angle with respect to his original
APPLICATIONS OF NEWTON'S LAWS - I 1. The conclusion from F = ma is that if F = 0 then a = 0 ! quite easy! yet how powerful ! This says that for anybody which is no
2 upright plane mirrors are 4 meters apart and facing each other. A man stands 1 meter in front of them. Determine the distance between the second images in the mirror
example of earth quake intensity
Van der Waals force (J.D. van der Waals): It is the forces which is responsible for the non-ideal behavior of gases, & lattice energy of molecular crystals. There are three ca
In a certain binary-star system, each star has the same mass which is 9.4 times of that of the Sun, and they revolve about their center of mass. The distance between them is the 3.
Q. Measurement of Wavelength of Monochromatic Light? Monochromatic Light is allowed to fall on plate G 1 . The M.I. is adjusted for circular fringes. For this mirror M 1 is ma
An object is placed 25.0cm from a thin converging lens. A screen is positioned so that a sharp image of the object is seen on the screen. When the object is moved 4.0cm closer to t
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