A. Zero
B. One
C. i^
D. k^
Related Mcqs:
- The magnitude of the cross product is equal to the dot product between them. The angle between the two vectors is________________?
A. 30°
B. 45°
C. 60°
D. 180° - Total uncertainty, in the result obtained from the subtraction of two measurements, is equal to_______________?
A. Sum of their absolute uncertainties
B. The difference of their absolute uncertainties
C. The product of their absolute uncertainties
D. Division of their absolute uncertainties - According to equation of continuity A1V1 = A2V2 = constant. The constant is equal to_______________?
A. Flow rate
B. Volume of fluid
C. Mass of fluid
D. The density of the fluid - The displacement of SHM is written as X = X`sinθt if the displacement is written by X = Xθ sont then phase constant will be equal to_______________?
A. 0°
B. 45°
C. 90°
D. 180° - 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° - 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° - The product of the frequency and time period is equal to_________________?
A. 1
B. 2
C. 3
D. 4 - The uncertainty in a measurement may occur due to_______________?
A. Limitation of an instrument
B. Natural variation of the object to be measured
C. Inadequate technique
D. All given in A, B and C - X-rays are similar in nature to_______________?
A. Cathode rays
B. Positive rays
C. γ-rays
D. Beta rays - A rubber cord of cross-sectional area 2cm2 has a length of 1m. When a tensile force of 10N is applied the length of the cord increases by 1cm. What is the youngs modulus of rubber ?
A. 2×108 Nm-2
B. 5×106 Nm-2
C. 0.5×10-6 Nm-2
D. 0.2×10-6Nm-2
