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An elementary particle is:
(1)An element present in a compound
(2)An atom present in an element
(3)A sub-atomic particle
(4)A fragment of an atom
Ans: (3)A sub-atomic particle
In a vacuum tube, electrons accelerate from the cathode element to the plate element, which is maintained at a positive potential with respect to the cathode. If the plate voltage
Are made up of alloys (manganin, constantan or nichrome) these materials have moderate Resistivity which is practically independent of temperature so that the specified value of re
Q. An aircraft having awing span of 20.48 m flies at a speed of 40 ms -1 . If the vertical component of the earth's magnetic field is 2 X 10 -5 T, compute the emf induced between
Electric Current: Electric current may be described as the rate of flow of charge. I=q/T Where, I = electric current q = charge T = time The unit of current i
A child in danger of drowning in a river is being carried downstream by a current that has a speed of 2.75km/hr. The child is 0.620km from shore and 0.755km upstream of a boat land
Safe and Sound Ltd is a public company whose business is the manufacture and sale of home security systems. Only 100,000 shares have been issued: Kate Smith and her sister Sara
Q. Figure s (a) and (b) show refraction of a ray in air incident at 60°with the normal to a glass Answer According to the given figure for the glass-air interface:
successive disintegration
What is geocentric? It is a science where the earth is the center of the solar system and the other planets and the sun revolve around the earth. Though, most scientists say t
a car of mass 800kg is pulling a trailer 300kg where sin a=1|200.Resistance to motion(apart from gravity) is 1.5N per kg of mad for each vehicle.calculate the pulls of the engine a
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