polychromatic radiation is used in an experiment on Photoelectric effect the stopping potential
Answers
Answer:
The stopping potential (Vs) in photoelectric effect related with the incident light frequency (ν) by the following equation: eVs=hν−ϕ, ... So the stopping potential is related to the shortest wavelength or longest frequency. So, the answer is option (C).
Answer:
If the substance can be hammered to convert into sheets then it is metal if it is broken into pieces then it is non-metal.
(b) Set up the circuit arrangement using bulb, battery, wire and switch. Place the object between the ends of circuit. If the bulb starts glowing then the substance is a metal otherwise it is non-metal because metals are good conductor of electricity.
Generally above methods can be used to identify metals and non-metals. But there are some exceptions also for example sodium is metal which is not malleable in fact it is brittle. Graphite, allotrope of non-metal carbon, is a good conductor of electricity.
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October 15, 2019
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