Quiz for Scalars and vectors

Q1: Which of the following is a vector quantity?

A. Speed B. Mass C. Work D. Displacement

Q2: What is the result of vector addition of two equal vectors at 90°?

A. Double the magnitude B. Zero C. √2 times magnitude D. Same as one vector

Q3: Which of the following is true about scalar quantities?

A. They have both magnitude and direction B. They do not follow vector laws of addition C. They are always positive D. They cannot be measured

Q4: Which of the following physical quantities is not a vector?

A. Velocity B. Force C. Power D. Acceleration

Q5: The unit vector in the direction of a vector A is defined as

A. A/|A| B. |A|/A C. A × A D. A²

Q6: Which of the following quantities can be negative?

A. Mass B. Speed C. Distance D. Displacement

Q7: Which method is used to add vectors?

A. Algebraic method B. Parallelogram law C. Multiplication method D. Division method

Q8: Which of the following is not associated with a vector?

A. Magnitude B. Direction C. Unit D. Temperature

Q9: A vector has

A. Only magnitude B. Only direction C. Both magnitude and direction D. None of these

Q10: Two vectors A and B are equal when

A. They have same magnitude only B. They have same direction only C. They have same magnitude and direction D. They are acting on same point

Q11: What is the angle between two vectors if their scalar product is zero?

A. 0° B. 90° C. 45° D. 180°

Q12: Which operation results in a scalar quantity?

A. Cross product of two vectors B. Dot product of two vectors C. Addition of two vectors D. Subtraction of two vectors

Q13: Which of the following can be zero for a moving body?

A. Speed B. Distance C. Displacement D. Mass

Q14: The magnitude of a vector is always

A. Negative B. Zero C. Positive or zero D. None of the above

Q15: If two vectors are anti-parallel, the angle between them is

A. 0° B. 90° C. 180° D. 60°

Q16: Which of the following represents vector multiplication?

A. A · B B. A + B C. A × B D. A – B

Q17: Which quantity is not scalar?

A. Speed B. Work C. Acceleration D. Distance

Q18: What is the magnitude of unit vector?

A. 0 B. 1 C. Variable D. Cannot be determined

Q19: Two vectors A and B satisfy A × B = 0 and A · B ≠ 0. Then, the angle between A and B is

A. 0° B. 45° C. 90° D. 180°