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Physics Mcqs

Submitted By :Ali Uppal


A central force is that which__________________?

  • (A)  Can produce torque
  • (B)  Cannot produce torque
  • (C)  Some time can produce torque some time cannot
  • (D)  Has no relation with torque
Submitted By :Ali Uppal


In which quadrant, the only value of tan will be positive ?

  • (A)  First
  • (B)  Second
  • (C)  Third
  • (D)  Both 1st and 3rd
Submitted By :Ali Uppal


The cross product of two vectors is a negative vector when______________?

  • (A)  They are parallel vectors
  • (B)  They are anti parallel vectors
  • (C)  They are a perpendicular vector
  • (D)  They are rotated through 270°
Submitted By :Ali Uppal


The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is_______________?

  • (A)  2i^ – 2j^ + k^
  • (B)  (2i^ – 2j^ +k^)/9
  • (C)  (2i^ – 2j^ +k^)/3
  • (D)  (2i^ – 2j^ +k^)/5
Submitted By :Ali Uppal


The dimension of torque is______________?

  • (A)  [ML2T-2]
  • (B)  [MLT-2]
  • (C)  [ML2T]
  • (D)  [ML-2T-2]
Submitted By :Ali Uppal


Torque is defined as______________?

  • (A)  Turning effect of force
  • (B)  Cross product of position vector and force
  • (C)  Product of force and moment arm
  • (D)  All A, B and C are correct
Submitted By :Ali Uppal


Submitted By :Ali Uppal


An angle between two vectors A and B can be determined by_____________?

  • (A)  Their dot product
  • (B)  Their cross product
  • (C)  Head to tail rule
  • (D)  Right-hand rule
Submitted By :Ali Uppal


Which one is a unit vector ?

  • (A)  ??3 i^ + ??3 j^ + ??3 k^
  • (B)  1/??3 i^ + 1/??3 j^ +1/ ??3 k^
  • (C)  ??3 / 3 i^ + ??3 / 3 j^ + ??3 / 3 k^
  • (D)  Both B and C are correct
Submitted By :Ali Uppal