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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.
Q. Compute the mutual inductance between two coils when a current of 4 a changing to 8 a in 0.5 s in one coil induces an emf of 50 mV in the other coil. Induce emf e = -
Assume a crane lifts a 900 kilogram wrecking ball 12 meters above a concrete slab. 105,840 Joules of potential energy are kept in the wrecking ball. Now the ball is dropp
What is Fission and Fusion? Fission: The breaking down of a Nucleus (not atom) into minute nuclei. It is usually induced by a neutron. For instance, a Helium nucleus (known a
Can you explain modulation? Why is it required? What is "World Wide Web" (WWW)? Give the frequency range of speech signals.
UNIT AND DIMENSION OF DISPLACEMENT. The S1-unit of displacement is metre (m). The dimension of displacement is [L] or [M o LT o ]
Three children are riding on the edge of a merry-go-round that is 100 kg, has a 1.60-m radius, and is spinning at 20.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If
examples showing liquids exert pressure
what is tortional pendulum?
The system below consist of identical massed (m1, and m2) that are connected by a string of negligible mass. Mass m1, is on a frictionless horizontal surface. The string runs over
Which of the following colours of visible light has the longest wavelength? Is it: a) Violet b) Green c) Yellow d) Red Ans: Red colour of visible light h
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