Physics MCQS

741. As we move up a body above the surface of the earth. The change in potential energy will always be?
A. Positive
B. Negative
C. Infinity
D. Zero

742. The kinetic energy of the bullet of mass 500 g moving at a speed of 200 m/s?
A. 125J
B. 250J
C. 500J
D. 10,000J

743. A body of mass 2 Kg moving with a velocity of 4m/s has the kinetic energy equals to?
A. 2J
B. 4J
C. 8J
D. 16J

744. A scalar is a physical quantity that is completely specified by:
A. Direction only
B. Magnitude only
C. Both magnitude and direction
D. None of these

745. Vectors are those physical quantities which require:
A. Magnitude
B. Magnitude and directions
C. Direction
D. None of these

746. Which of the following is a scalar quantity?
A. Density
B. Displacement
C. Torque
D. Weight

747. Which of the following is an axis at a right angle to both x and y axes and points in space?
A. Unit vector axis
B. Zero vector axis
C. Z-axis
D. None of these

748. Two forces of 10N and 15N are acting all the while on an item in a similar heading. The end result is:
A. Zero
B. 5N
C. 25N
D. 15N

749. The vector product of two vectors is zero when:
A. Their lines run parallel to one another
B. They are equal vectors
C. They are perpendicular to each other
D. They are inclined at an angle of 60 degrees

750. Position vector is a vector that describes the:
A. Location of a point with respect to origin
B. Location of a point with respect to any point
C. Location of a point with respect to some related point
D. None of these