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| #1 Learning Platforrr, , Start Complete Exam Preparation, , Pe Ped aa ear, ae tt . Question Bank Be es], , B® Download App, , , , Vectors MCQ Question 1 View this Question Online, Which of the following Is not a vector quantity?, , 1. Weight, , 2. Nuclear spin jy, , 3. Momentum, , 4. Potential energy, , Answer (Detailed Solution Below), , Option 4: Potential energy, , Vectors MCQ Question 1 Detailed Solution, , CONCEPT:, , + All measurable quantities are divided into two broad categories:
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Scalar quantities Vector quantities, , , , , , The physical, , The physical uantities which, , quantities which ave both magnitude, , have only magnitude andjand direction and obey, , ino direction are he laws of vector, , called scalar quantities jaddition are, , or scalars. alled vector quantities, vectors, , , , |A scalar quantity can be |A vector quantity is, specified by a single pecified by a number, , , , number, along with the @ unit and its, proper unit irection, , Examples: Mass, xamples Displacement,, volume, density, time, elocity, force, weight,, , temperature, electric orque, momentum,, current, distance, Energy,jacceleration, velocity,, , , , , , , , speed, etc tC., , EXPLANATION:, * Energy is quantity has only magnitude. It does not require any direction. So It Is a scaler, not, vector quantity., , * The weight of a body denotes gravitational force. And force requires magnitude and direction (in, which direction it is acting) both to describe, So weight is a vector., * Similarily momentum requires magnitude and direction (in which direction it is acting) both to, describe., So momentum is a vector., + In chemistry, you will study that the Nuclear spin of an electron has two directions clockwise and, anti-clockwise. So it will also be a vector., , ‘, , Delamere eel, , #1 Learning | Y eee, , Pha eh Se, vy r, , Bt . Pens Bel bac, , B® Download App, , , , Vectors MCQ Question 2 View this Question Online
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Select the scalar quantity., , resTDOOK.com, , 1. Force Q, , 2. Velocity, 3. acceleration, , 4. pressure, , Answer (Detailed Solution Below), , Option 4 : pressure, , Vectors MCQ Question 2 Detailed Solution, , CONCEPT:, , + All measu, , Ja os, , , , ED -<ty,,, , , , The physical, , , , , , , , , , A scalar quantity can be, specified by a single, number, along with the, proper unit., , a unit and its, , vector quantity is, pecified by a number, rection., , , , Examples: Mass,, volume, density, time,, lemperature, electric, , speed, etc., , , , current, distance, Energy,, , locity, force, weight,, orque, momentum,, , = Displacement,, e, celeration, velocity, etc, , , , , , , , EXPLANATION:, , + From the above table, it is clear that force, velocity, and acceleration are vector quantity because, they have both magnitude as well as direction. Therefore option 1, 2, and 3 is incorrect., , are oe into ol broad Loomacyiee:, = ~ji™,, , 2
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+ Pressure is defined as force per unit area. |t is a scalar quantity because it has only magnitude, and it is independent on the size of the area chosen. Therefore option 4 is correct., , i #1 Learning Platforr, , Start Complete Exam Preparation, , 1,86,00,449+, , Ba) Daily Live ie lata DP e-selbetan, TE Cage EE) Ls beast ear, , , , Vectors MCQ Question 3 View this Question Online >, , Which of the following Is a vector quantity ?, , 1. Electrostatic energy, , 2. Intensity of electric field, 4, , 3. Electrostatic potential, , 4. Electric current, , Answer (Detailed Solution Below), , Option 2 : Intensity of electric field, , Vectors MCQ Question 3 Detailed Solution, , Concept:, Physical quantities are of two types:
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Scalar quantity Vector quantity, The quantities which The quantities which, require only the onntininend, , magnitude to specify Ginsction ti, them is called a o specify, them is called a, scalar quantity., vector quantity., , , , Examples: Mass,, , Examples: Velocity,, , , , , , , , , , , , , , - Displacement,, Density, Volume,, Energy, Speed, etc. fee Force,, Explanation:, Electric Field Intensity (E):, + The space around an electric charge in which its influence can be felt is known as the electric, field., + The electric field intensity at a point is the force experienced by a unit positive charge placed at, that point., , * Electric Field Intensity is a vector quantity. It is denoted by ‘E’., + Electric Field = F/q., , * Unit of Eis NC’ or Vm"!, , Electrostatic energy and electrostatic potential are scalar quantities because it only requires, magnitude and not the direction., , A Mistake Points, , * In the case of electric current, when two currents meet at a junction, the resultant current of, these will be an algebraic sum and not the vector sum., , + Therefore, an electric current is a scalar quantity although it possesses magnitude and, direction., , | #1 Learning Pla, , Start Complete Exam Preparation, , ee, , eo], Peeking, , ee |, ate, , Ne meet), , Pee isa, , a), , , , Vectors MCQ Question 4
