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Hubble's law (E.P. Hubble; 1925):
A relationship discovered among distance & radial velocity. Further away a galaxy is away from is, the quicker it is receding away from us. The constant of proportionality is Hubble constant, H0. The cause is interpreted such as the expansion of spacetime itself.
Show the conditions for total internal reflection to happen. Arrive at the relation between refractive index and critical angle. What do you mean by optical fibre? on what rules do
Two waves of equal frequency have amplitudes 2 units and 3 units respectively. When they superpose coherently the intensity of the resultant wave is I 1 . The intens
Contact forces: types of forces that result when the two interacting objects are apparent to be physically linking each other. Ex: frictional forces, tensional forces, normal f
Explain Huygens eye piece with the help of a clean sketch. Illustrate its advantages and disadvantages. What are impure and pure spectra. State the conditions to produce a pure
A spectrometer is required for creating pure spectrum of a source in laboratory and measuring of ? of material of prism and ? of a transparent liquid. It has of three parts: Col
The airplane shown in the figure is to achieve "weightlessness" for a short period of time by flying along a curved path such that it's acceleration components in x direction a x
The pump shown in the figure adds 20 kW of power to the flowing water. The only significant loss is that which occurs across the filter at the inlet of the pump. Determine the head
De?ne reduction potential and oxidation potential. Reduction potential of a metal is the measure of tendency of a metallic electrode to gain electrons when it is in contact wit
Thermodynamics, Similarities between System and Control Volume (a) System and Control Volume are defined by careful in description of their boundaries. (b) System and Control Vol
Coulumb's Law: Statement: The magnitude of the electrostatic force among two point's charges is directly proportional to the product of the magnitude of the charges and inve
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