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Snell's Law:
The ratio of sine of angle of incidence to the sine of angle of refraction is constant for all rays passing from one medium to another medium.
That is Sini/Sinr = Constant
This is known as a Snell's law.
Can you explain coherent sources of light?
Electric field lines In good metallic conductors: In good metallic conductors: (i) Static electric fields are not there (zero inside a conductor) (ii) Charges reside
Q. What is band emission spectrum? Give an example. It consists of a numerous bright bands with a sharp edge at one end but fading out at the other end. Band spectra are acquir
UNIT: SI unit of force is Newton (N).
a. Which materials are conducting to which other materials? Water conducting can Can conduct bubble wrap Can to cotton wrap b. Which layers are insulating?
give examples of like and unlike parallel forces
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 110 Hz has two strings at this frequency.
A motor has an output of 4.8kW, an efficiency of 80% and a power factor of 0.625 lagging when operated from a 240V, 50Hz supply. It is needed to improve the power factor to 0.9
A steam bath An evaporating dish and steam bath can be contrived from a saucer and a tin. Scallops are cut out of the top of the tin to permit the steam to escape
Two forces have magnitudes of 11 newtons and 5 newtons. The magnitude of their sum could NOT be equal to which of the following values? a) 16 newtons b) 5 newtons b)
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