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Question from image formation by a plane mirror

if a ball is located 4 meters in front of a mirror, what distance separates the object from the image? please Use your diagram to aid your answer.

Asked Sumena

Resistance In Circuit

Please solve this problem. And please keep in mind that i have just passed 10th standard guyz.

res

Asked Govind

units and measurement

THE LENGTH OF UNIFORM ROD IS 100.0CM AND RADIUS IS 1.00CM.IF LENGTH IS MEASURED WITH METER ROD HAVING LEAST COUNT 1MM AND RADIUS IS MEASURED WITH VERNIER CALIPERS HAVING LEAST COUNT 0.1MM,THE PERCENTAGE ERROR IN CALCULATED VOLUME OF CYLINDER IS?

2000px-Vernier_Caliper_150mm.svg

Asked Megha

Coulomb’s law

at each of the four corners of a sqare of side A, a charge +q is placed freely. what charge should be placed at the centre of the sqare so that whole  system be in equilibrium

 

Asked Shashank

http://www.meritnation.com/ask-answer/question/at-each-of-the-four-corners-of-a-square-of-side-a-a-charge/electric-charges-and-fields/9139189

Sensitivity of Wheatstone’s Bridge

When does the sensitivity of a wheatstone bridge reduce?

 

Asked Shreya

 

Answer:

 

Sensitivity refers to a large deflection for a small imbalance of the bridge.

 

Now try to identify the factors contributing to sensitivity!

 

Wheatstone bridge using Thomson galvanometer

 

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