NCERT Class 12 · Ch 10 Exercise 10.1 · Q2
NCERT Class 12 Maths · Chapter 10 Vector Algebra · Exercise 10.1 Question 2
Classify (i) 10 kg, (ii) 2 m north-west, (iii) 40°, (iv) 40 W, (v) 10^(−19) C, (vi) 20 m/s² as scalar/vector measures.
💡 Concept Hints
- Write the vector components and identify the required direction or geometric relation.
- Use the magnitude, dot-product, cross-product or section formula that matches the requested quantity.
✅ Step-by-Step Solution
Final Answer: (i),(iii),(iv),(v): scalar; (ii),(vi): vector quantities.
- Mass, angle, power and charge have magnitude without a spatial direction; they are scalars.
- Displacement north-west is a vector. The acceleration in (vi) is a vector quantity, though the written value supplies its magnitude without its direction.
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