Download App

Physics and Mathematics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsPhysics and Mathematics1 Mark
Question
A vector is not changed if:
  1. It is rotated through an arbitrary angle.
  2. It is multiplied by an arbitrary scalar.
  3. It is cross multiplied by a unit vector.
  4. It is slid parallel to itself.
✓

Answer

  1. It is slid parallel to itself.
Explanation:
A vector is defined by its magnitude and direction. If we slide it to a parallel position to itself, then none of the given parameters, which define the vector, will change.
Let the magnitude of a displacement vector $\big(\overrightarrow{\text{A}}\big)$ directed towards the north be 5 metres. If we slide it parallel to itself, then the direction and magnitude will not change.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Physics and Mathematics→Physics and Mathematics — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Imagine that you are sitting in a room with your back to one wall and that an electron beam traveling horizontally from the back wall towards the front one is deflected towards the right. What is the direction of the magnetic induction field that exists in the room? 
→
The ratio of secondary to the primary turns in a transformer is $3: 2.$ If the power output be $P,$ then the input power neglecting all loses must be equal to
→
The total work done on a particle is equal to the change in its kinetic energy:
  1. Always.
  2. Only if the forces acting on it are conservative.
  3. Only if gravitational force alone acts on it.
  4. Only if elastic force alone acts on it.
→
The half$-$life period and the mean life period of a radioactive element are denoted respectively by $T_h$ and $T_m$ Then?
→
The direction of line of magnetic field of bar magnet is(a) From south pole to north pole(b) From north pole to south pole(c) Across the bar magnet(d) From south pole to north pole inside the magnet and from north pole to south pole outside the magnet
 
 
 
 
→
How will  the force between the two poles change if the two poles are connected by an iron rod keeping the distance between two magnetic poles constant ?
→
A point source of light is placed 4 m below the surface of water of refractive index 5 / 3. The minimum diameter of a disc which should be placed over the source on the surface of water to cut–off all light coming out of water is(a) 2 m(b) 6 m(c) 4 m(d) 3 m
       
→
One watt is equal to __________?
→
 The rate of flow of electric charge through any cross-section of a conductor is known as __________.
→
A cell of internal resistance 1.5Ω and of e.m.f. 1.5 volt balances 500 cm on a potentiometer wire. If a wire of 15 Ω  is connected between the balance point and the cell, then the balance point will shift(a) To zero(b) By 500 cm(c) By 750 cm(d) None of the above
       
→