721. The minimum value of n is if the sum of N forces of different magnitudes acting at a point is zero:
A. 1
B. 2
C. 3
D. 4
722. Force 5 Dyne’s rectangular components are as follows:
A. 3 and 4 dyne
B. 2 and 5 dyne
C. 1 and 2 dyne
D. 2 and 3 dyne
723. Two forces of 10N and 15N are acting simultaneously on an object in the same direction their resultant is:
A. Zero
B. 5N
C. 25N
D. 150N
724. The vectors will be as follows if the dot product of two non-zero vectors disappears:
A. In the same direction
B. Opposite to each other
C. Perpendicular to each other
D. Anti-Parallel
725. The dot product of two vectors is negative when:
A. They are parallel vectors
B. They are anti-parallel vectors
C. They are perpendicular vectors
D. None of the above is correct
726. The vector product of two non-zero vectors is zero when:
A. Their lines run parallel to one another
B. They are perpendicular to each other
C. They are equal vectors
D. They are inclined at an angle of 60 degrees
727. Identify the vector quantity:
A. Heat
B. Angular momentum
C. Time
D. Work
728. Which of the following quantities is a scalar?
A. Magnetic moment
B. Acceleration due to gravity
C. Electric field
D. Electrostatic potential
729. Angular momentum is:
A. A scalar
B. A vector
C. Neither A nor B
D. Either A or B
730. Which of the following is a scalar quantity?
A. Displacement
B. Electric field
C. Acceleration
D. Work
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