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Recording of hologram Waves scattered from the object are known as object waves. The coherent waves reaching directly form the source is known as reference waves. When object w
When two waves of exactly similar frequency (coming from two coherent sources) travels in a medium, in the similar direction simultaneously then because of their superposition, at
The device which changes chemical energy into electrical energy is called as electric cell. Battery is a host of constant emf but not constant current.
Determine the Charge of the lithium ion A mass spectrometer often is used in carbon dating to verify the ratio of C-14 isotopes to C-12 isotopes in a biological sample. This ra
Average acceleration is described as the change in velocity over a given time interval Δt. Hence, The instantaneous acceleration of given particle is the rat
parsec: The unit of distance explained as the distance mentioned by an Earth-orbit parallax of 1 arc sec. It equals approximate 206 264 au, or about 3.086 x 10 16 m.
In 1.0s, 5.0x10^23 nitrogen molecules strike an area of8.0cm^2 at a speed of 300m/s. What is the pressure? (mass of one nitrogen molecule = 4.68x10^-26 kg.) I believe I should use
The measurements taken in Ramdesns eyepiece more worthy (reliable) than Huygens eyepiece. Why? Describe critical angle. show its relationship with refractive index.
A tin can charcoal burner A large tin can at least 10 cm in diameter should be use. About 4 cm from the bottom mark off triangular windows around the can, as shown in the diagr
Emission spectrum of hidrogen is different from emission spectrum of sodium.Why? Ans) Because, in sodium atom there are already many other electrons present in the atom aother than
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