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1. |
A pendulum bob of mass m carrying a charge q is at rest with its string making and angle \[\theta \] with the vertical in a uniform horizontal electric field E. The tension in the string is |
A. | \[\frac{mg}{\sin \theta }\text{ and }\frac{qE}{\cos \theta }\] |
B. | \[\frac{mg}{\cos \theta }\text{ and }\frac{qE}{\sin \theta }\] |
C. | \[\frac{mg}{\cos \theta }\text{ and }\frac{qE}{\sin \theta }\] |
D. | \[\frac{mg}{qE}\] |
Answer» C. \[\frac{mg}{\cos \theta }\text{ and }\frac{qE}{\sin \theta }\] | |