Time Left:
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1. Which one is correct for the slope of velocity-time graph?
A. A
B. B
C. C
D. D
5. Area under a v - t graph represents a physical quantity which has the unit:
A. m2
B. m/s
C. m/s2
D. m
6. The acceleration of an object moving in a straight line can be determined from:
A. The area between the distance-time graph and time axis.
B. The area between the velocity-time graph and time axis
C. The slope of the velocity-time graph.
D. The slope of the distance-time graph.
11. If the speed-time graph is a straight line parallel to the time axis, then the body is
A. accelerated motion
B. in uniform motion
C. non-uniform accelerated motion
D. at rest
13. If the velocity-time graph of an object is not a straight line, then its acceleration is:
A. Variable
B. Positive
C. Zero
D. Negative
18. Assertion-The SI unit of the speed is Sms-1 Reason-SI unit gives us standard information’s
A. a) Both assertion and reason are correct, and reason is the correct explanation for assertion
B. b) Both assertion and reason are correct, and reason is not the correct explanation for reason.
C. c) Assertion is true and reason is false.
D. d) Assertion and reason are false.
19. Assertion- If the car is moving on straight road, the distance moved and the magnitude of displacement are equal. Reason- Displacement is a vector quantity.
A. a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.
B. b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.
C. c.) Assertion is true but Reason is false.
D. d.) Assertion is false but Reason is true.
20. Assertion- average velocity is given by the arithmetic mean of initial velocity and final velocity for a given period of time. Reason- the velocity of the object is changing at a non-uniform rate.
A. a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.
B. b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.
C. c.) Assertion is true but Reason is false.
D. d.) Assertion is false but Reason is true.
21. Assertion- average velocity is given by the arithmetic mean of initial velocity and final velocity for a given period of time. Reason- the velocity of the object is changing at a uniform rate.
A. a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.
B. b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.
C. c.) Assertion is true but Reason is false.
D. d.) Assertion is false but Reason is true.
22. Assertion- Different objects may take different amounts of time to cover a given distance. Reason- Speed measures the rate of change of motion of an object.
A. a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.
B. b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.
C. c.) Assertion is true but Reason is false.
D. d.) Assertion is false but Reason is true.
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