बल क्या है? What is a force? , A form of energy, A push or a pull, A measure of mass, A type of motion, बल की SI इकाई क्या है? The SI unit of force is:, Kilogram, Newton, Joule, Watt, निम्नलिखित में से कौन-सा संपर्क बल है? Which of the following is a contact force?, Gravitational force, Magnetic force, Friction, Electrostatic force, गुरुत्वाकर्षण बल किस प्रकार का बल है? Gravitational force is an example of:, Contact force, Non-contact force, Electrostatic force, Frictional force.

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