CLASS 11 - NCERT - PHYSICS - MOTION IN A PLANE QUESTIONS WITH CORRECT ANSWERS
LATEST UPDATE 2025/2026
What are scalar quantities? - Answers Physical quantities which have only magnitude which can
either be negative or positive and a unit of measure.
eg- mass, distance, average speed, temperature,
instantaneous speed, energy, pressure
density, charge
What are vector quantities? - Answers Any physical quantity which have both magnitude and
direction . They follow laws of vector algebra .
eg - momentum, velocity, impulse, angular momentum, torque, gravitational field, electric field,
magnetic field
What are parallel vectors? - Answers If two vectors have same direction, they are parallel to
each other.
What are anti-parallel vectors? - Answers When two vectors are in opposite direction, they are
said to e anti-parallel.
What are equal vectors? - Answers If two vectors have same magnitude and direction, they are
parallel to each other.
What is a zero vector? - Answers It is a vector with zero magnitude and undefined direction.
What are negative vectors? - Answers If two vectors have same magnitude and is in opposite
direction.
What is the angle between vectors? - Answers It is the smaller angle between the tail's or head's
of the two vectors.
types of vector addition - Answers 1) Triangle law
2) Polygon law
3) Parallelogram law
They are commutative and associative.
Formula for resultant - Answers sq root a^2 + b^2 + 2abcostheta
LATEST UPDATE 2025/2026
What are scalar quantities? - Answers Physical quantities which have only magnitude which can
either be negative or positive and a unit of measure.
eg- mass, distance, average speed, temperature,
instantaneous speed, energy, pressure
density, charge
What are vector quantities? - Answers Any physical quantity which have both magnitude and
direction . They follow laws of vector algebra .
eg - momentum, velocity, impulse, angular momentum, torque, gravitational field, electric field,
magnetic field
What are parallel vectors? - Answers If two vectors have same direction, they are parallel to
each other.
What are anti-parallel vectors? - Answers When two vectors are in opposite direction, they are
said to e anti-parallel.
What are equal vectors? - Answers If two vectors have same magnitude and direction, they are
parallel to each other.
What is a zero vector? - Answers It is a vector with zero magnitude and undefined direction.
What are negative vectors? - Answers If two vectors have same magnitude and is in opposite
direction.
What is the angle between vectors? - Answers It is the smaller angle between the tail's or head's
of the two vectors.
types of vector addition - Answers 1) Triangle law
2) Polygon law
3) Parallelogram law
They are commutative and associative.
Formula for resultant - Answers sq root a^2 + b^2 + 2abcostheta
