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Electrons are emitted from a photosensitive surface when it is illuminated by green light but electron emission does not take place by yellow light. Will the electrons be emitted when the surface is illuminated by (i) red light, and (ii) blue light.
Who discovered Proton? In 1886 Eugen Goldstein discovered canal rays (also called as anode rays) and showed that they were positively charged particles (ions) formed from gases
Ceramics are materials made by higher temperature firing treatment of natural clay and certain inorganic matters. Structurally ceramics are crystal bonded together. Other materials
Fusion Reaction: In nuclear fusion light nuclei are brought together to form a relation heavier nucleus. They energy free in nuclear fusion is larger than that free in fission.
Non-Horizontally Launched Projectiles Assume a cannonball being launched at an angle from cannon atop an extremely high cliff. Suppose as well in which the cannonball does not
As electric field is conservation, work done and as potential difference among two points is path independent and depends only on the position of points between which the charge is
Electrical Bell: 1.An electromagnet, which is made by winding insulated copper wire on a soft iron core. 2.An armature which is soft iron strip with spring. 3.A soft iron
what is radioactivity?
How to draw hr diagram including life cycle of the sun
The ordered arrangements of radiations according to wavelengths or frequencies are called as Spectrum. Spectrum may be divide in two parts Emission spectrum and Absorption spectrum
when a soft iron piece is buried under the surface of earth in the north south direction why the iron piece show properties of a magnet
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