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candela; cd
The basic SI unit of luminous intensity described as the luminous intensity in a given direction of a source which emits monochromatic photons of frequency 540 x 1012 Hz and contains a radiant intensity in that direction of 1/683 W/sr.
What do you mean by dispersion of light? Write down the expression for the deviation produced by a thin prism?
1. Explain the basic features of electricity at a fundamental level? ( Describe the nature of electricity) 2. What part of a cable are conductors and insulators? (Recogini
Q. Heisenberg's uncertainty principle of position & momentum. Describe an experiment to study the uncertainty of position & momentum. Heisenberg's Uncertainty Principle : It
What are the advantages of fibers optics? Glass fiber optics are extremely resilient and ideally fine for working in places where the actual conductor will tend to extreme temp
what is the unit of hardness?
How to obtain localized fringes
The birghtness of objects past Neptune actually varies approximately as 1/d^4. Why is that the case?
Here's what is given: A. There are three 1 meter sticks B. There are four weights: Weight #1 = 1kg Weight #2 = 1.2kg Weight #3 = 1.5kg Weight #4 = 2kg The sticks don't hav
Average and Instantaneous Acceleration: Average acceleration is explained as the change in velocity over a given time interval. As, The instantaneous acceleration of g
A Decibel meter reads 140 dB for a sound source at 20''c at 60 % relative humidity. It also records sound pressure for 140 dB as 200 pascals what will it read( decibel meter) at 4
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