Physics - Mock Test 26

Question 251

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

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Question 252

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

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Question 253

Null vector is a vector which has?

A) zero magnitude B) no specified direction C) both a and b are correct D) both a and b are not correct

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Question 254

The direction of vector product is given by?

A) head to tail rule B) right hand rule C) left hand rule D) triangular rule

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Question 255

In which quadrant the two rectangular components of a vector have same sign?

A) 1st B) 2nd C) both 1st and 3rd D) 4th

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Question 256

What is the angle that the given vector makes with y-axis?

A) 30? B) 60? C) 90? D) 120?

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Question 257

The resultant of two forces of equal magnitudes is also equal to the magnitude of the forces. The angle between the two forces is?

A) 30? B) 60? C) 90? D) 120?

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Question 258

Maximum number of components of a vector may be?

A) one B) two C) three D) infinite

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Question 259

Maximum number of rectangular components are?

A) one B) two C) three D) infinite

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Question 260

Unit vector n^ is along?

A) x-axis B) normal on a surface C) y-axis D) z-axis

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