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Olbers' paradox (H. Olbers; 1826):
If the Universe is uniform, infinite & unchanging then the whole sky at night would be bright regarding as bright as the Sun. The further you looked out to space, the more stars there would be, and therefore in any direction wherein you looked your line-of-sight would impinge upon a star eventually. The paradox is resolved through the big bang theory, which puts forth that the Universe is dynamic, non-uniform and (probably) finite.
When a semiconductor is doped with a P-type impurity, each impurity atom will (A) Acquire negative charge. (B) Acquire positive charge. (C) Remain
Explain power of a lens. What is the principle of an optical fibre? What is a thin prism? Describe angular dispersion between two colours for a prism.
The tree needs to fall uphill even though it is leaning downhill. The felling notch at O is sufficiently large so that the resisting moment at O is negligible. The trunk above po
First law of thermodynamics is stand on the principle of the conservation of power. According to the first law, ΔQ = W + ΔU Where, Δ Q = heat given to the system
What is calculated constraint relation?
Does the force constant of a spring changes if it is cut into parts?
Q. Explain what is free fall acceleration? Answer:- On earth free drop acceleration is 9.81 meters per second per second or 32.2 feet per second per second not including a
Tungsten: Atomic number 74 Symbol W Atomic weight 183.85 Discovery Purified Tungste
If the angle of incidence is 60 degrees,then what is the angle of deviation?
A dart gun is fired while being held horizontally at a height of0.80 m above ground level and while it is at rest relative to the ground. The dart from the gun travels horizontal d
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