Physics Test No 1, 1st Year Time (15 Minutes)TEST NO.1 CH.2 START TO VECTOR PRODUCT1. The direction of a vector in space is specified by a. one angle b. two angles c. three angles d. four angles2. Magnitude of resultant will be maximum when angle between vectors is a. 0 b. 180 c. 90 d. all 3. Magnitude of resultant will be minimum when angle between vectors is a. 0 b. 180 c. 90 d. all 4. Minimum number of vectors of unequal magnitude whose vector sum is zero a. 1 b. 2 c. 3 d. 45. Reverse process of vector addition isa. subtraction b. resolution c. product d. none 6.A force of 10 N acting along x axis has y component a. zero b. 10 Nc. 5 N d. 20 N 7.If and are unit vectors along x and y axis respectively then magnitude of vector + will be a. 1b. 2 c. 3d. 28.If A. B = 0 then it can be concluded that the two vectors are a. parallel to each other b. perpendicular to each other c. unit vectors d. anti parallel to each other 9. A. A will be equal to a. A b. A2 c. 0 d. A/2 10.If F1 = 3N and F2 = 6N , F1 is making an angle of 300 and F2 is making an angle of 1200 with x axis then their scalar product will be a. 9N2 b. 18N2 c. 27N2 d. none11. In which quadrant the two rectangular components of a vector have same sign?a.1st b. 2nd c. both 1st and 3rd d.4th12. Two vectors are A = 3i^+2j^ -k^& B = -3i^ - 2j^ + k^ , thena. B is antiparallel to A b .B is negative vector of Ac. B has negative magnitude d. B is perpendicular to A13. If RX =Ryand resultant is in 2nd quadrant then direction of vector will bea. 45 b. 135 c. 225 d. 215

14.If A x B points along positive Z axis then vectors A and B must lie in a. xy plane b. xz plane c. yz plane d. none TEST NO.1 CH.2 START TO VECTOR PRODUCTTime (45 Minutes)SHORT QUESTIONS Attempt all the questions MARKS 3X2=61. (a) Define unit vector (b) position vector 2. Define rectangular components of a vector.3.Does commutative law holds in cross product?LONG QUESTION4.Define and explain scalar product. Give its two examples and four characteristics. (5)