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Explain the term 'work function' of a metal. The threshold frequency of a metal is f0. When the light of frequency 2f0 is incident on the metal plate, the maximum velocity of electrons emitted is v1. When the frequency of the incident radiation is enhanced to 5f0, the maximum velocity of electrons emitted is v2. Find the ratio of v1 to v2.
HYSTERESIS LOOP: A ferromagnetic material retains some magnetism after the magnetising force is removed. The BH curve (O to Q) will therefore only be followed once, on initial
A rectangular coil of sides 8cm by 6cm is rotating in a magnetic field such that the longer sides cut the magnetic field. Calculate the maximum generated e.m.f. if there are 6
how does a Vernier caliper work
A bucket of water is suspended from a ?xed point by a rope. The bucket is set in motion and the system swings as a pendulum. Though, the bucket leaks and the water slowly ?ows
a pond is an example of
Micrometer Simulation A Micrometer is used to measure the external dimensions of objects that are 3 cm or smaller, this provides precise measurements to inside 0.01 mm. The
Horizontally Launched Projectiles Suppose a cannonball being launched from cannon atop a extremely high cliff. Imagine as well in which the cannonball does not encounter a impo
Ask question 15. When the movable mirror of a Michelson''s interferometer is moved through a distance of 0.03mm, 100 fringes are displaced, what is the wavelength and color of the
A radioactive substance has a half life of 1 min. If one nuclei decays now , when will be next decay????
Real ball bearings Study real ball bearings and roller bearings. Make a list of devices that having ball bearings or roller bearings.
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