761. Total mass when silver coins are added to the box as 2.2 kg, 0.01001 kg, and 0.01002 kg correct to appropriate precision:
A. 2.3 Kg
B. 2.2 Kg
C. 2.43 Kg
D. 2.67 Kg
762. The fundamental unit which has the same power in the dimensional formula of surface tension and viscosity is:
A. Mass
B. Length
C. Time
D. None
763. The percentage errors in the measurements of mass and speed are 2% and 3% respectively. How much will be the maximum error in the estimate of the kinetic energy obtained by measuring mass and speed:
A. 11%
B. 8%
C. 5%
D. 1%
764. In which quadrant does 2i – 3j lie?
B. 2nd
B. 2nd
C. 3rd
D. 4th
765. If Rx is negative and Ry is positive, the resultant vector will lie in?
B. 2nd
B. 2nd
C. 3rd
D. 4th
766. Two forces of magnitude 10 N and 20 N act on a body in directions making an angle of 30 degrees. The component of resultant force will be?
A. 17.98 N
B. 20.98 N
C. 30.98 N
D. 25.98 N
767. If the two components of a vector are equal in magnitude. The vector making angle with the x-axis will be?
A. 0 Degree
B. 30 Degree
C. 45 Degree
D. 90 Degree
768. The force of 15 N makes an angle of 90 degrees with the x-axis. Its Y-component is?
A. 0 N
B. 15 N
C. 45 N
D. 30 N
769. The resultant of two forces 3 N and 4 N acting at right angles to each other is?
A. 1 N
B. 4 N
C. 5 N
D. 7 N
770. The maximum number of components of a vector may be?
A. One
B. Two
C. Three
D. Infinite
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