Mathematical Tools and Vectors
2 solved NEET Physics previous year questions on Mathematical Tools and Vectors, each with the correct answer and a full explanation.
Q1
Assertion A: If and are four points on a semicircular arc with centre at ' ' such that , then Reason R: Polygon law of vector addition yields In the light of the above statements, choose the most appropriate answer from the options given below: [JEE Main 2021, 27 Jul (Shift 1)]
✓ Correct answer: d) Both and are correct but is not the correct explanation of .
ExplanationPolygon law is applicable in both the cases given but the equation given in the reason is not useful in explaining the assertion.
Q2
Statement I : If three forces , are represented by three sides of a triangle and , then these three forces are concurrent forces and satisfy the condition for equilibrium. Statement II : A triangle made up of three forces and as its sides taken in the same order, satisfy the condition for translatory equilibrium. In the light of the above statements, choose the most appropriate answer from the options given below: [JEE Main 2021, 31 Aug (Shift 2)]
✓ Correct answer: d) Both Statement I and Statement II are true.
ExplanationGiven statements are: Statement: I If three forces , are represented by three sides of a triangle and , then these three forces are concurrent forces and satisfy the condition for equilibrium.Statement: II A triangle made up of three forces and as its sides taken in the same order, satisfy the condition for translatory equilibrium.Solution: Here Since (equilibrium) Hence, both the statements are correct.
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