pls give ans of these two questions........
1. a positively charged particle projected towards west is deflected towards north by a magnetic field. find the direction of magnetic field?
2. what is the colour of chloride salt used in black and white photography?
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Answer:
Explanation:
1.Here the direction of positively charged alpha particle is towards west this implies the direction of current is also towards west and the direction of magnetic force is towards north. Hence, according to Fleming's left hand rule, the direction of magnetic field will be upwards.
2.There are two salts that are used in the creation of the black and white photography which are Silver chloride and the silver Iodide. Silver halides are quite sensitive to the light, and when the photon particles fall, they start photochemical reactions to complete the job. .......... silver color...