731. A force of 10N is acting along the y-axis towards the origin. Its component along the x-axis is:
A. 10N
B. 20N
C. 100N
D. Zero N
732. Find the angle between two forces of equal magnitude if their resultant is also equal to the magnitude of either of these forces:
A. 60 Degree
B. 120 Degree
C. 180 Degree
D. 360 Degree
733. When the falling object strikes the ground kinetic energy changes into?
A. Sound energy
B. Heat energy
C. Electric energy
D. Heat and Sound energy
734. According to the law of conservation of energy?
A. Energy can be destroyed.
B. Energy cannot be destroyed.
C. Both A & B
D. None of the above
735. If there is air friction then for a free-falling body?
A. Loss in Potential energy = Gain in Kinetic energy
B. Loss in Potential energy ≠ Gain in Kinetic energy
C. Either of these
D. None of the above
736. If there is no air friction then for a free-falling body?
A. Loss in Potential energy = Gain in Kinetic energy
B. Loss in Potential energy ≠ Gain in Kinetic energy
D. None of the above
737. For a freely falling body, the total amount of energy at any point?
A. Decreases
B. Increases
C. Remains constant
D. None of the above
738. When a body goes upward then its?
A. Kinetic energy increases and Potential energy decreases.
B. Kinetic energy decreases and Potential energy increases.
C. Both Kinetic energy and Potential energy decrease.
D. Both Kinetic energy and Potential energy increase.
739. A car starts from rest and covers a distance of 100 m in one second with uniform acceleration will be:
A. 50 m/s^2
B. 100 m/s^2
C. 200 m/s^2
D. 300 m/s^2
740. The value of ‘g’ at the center of the earth is:
A. Zero
B. 2g
C. 3g
D. None of the above
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