Worksheet

Syllabus Study Notes

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Class IX >> Science >> Work and Energy >> A1

Q1	Which of the following is an example of work done?
A	Talking with Friends
B	Watching A Movie
C	Humming A Tune
D	None of the Above

Q2	If F =1 N and s =1 m then the work done by the force will be __________.
A	1 Watt
B	1 Nm
C	1 J
D	Both (B) and (C)

Q3	Work is defined as the __________.
A	Product of Force and Displacement
B	Product of Force and Time
C	Product of Time and Displacement
D	Velocity per Unit of Time

Q4	Ravi could not displace rock despite pushing it very hard and thus, work done by him on rock is equal to ____________.
A	Mass of Ravi
B	Mass of Rock
C	Zero
D	Force Applied by Ravi

Q5	Work has __________.
A	Both Magnitude and Direction
B	Magnitude Only
C	Direction Only
D	Neither Magnitude nor Direction

Q6	What is the work done when the force on the object is zero?
A	Work will be Negative
B	Work will be Positive
C	Zero
D	None of the Above

Q7	SI unit of work is __________.
A	Newton Metre/Second
B	Newton Metre
C	Newton/Metre
D	Newton Metre Second

Q8	The conditions required to be satisfied for work to be done are __________.
A	A Force Exerted on the Object
B	Displacement of Object
C	Duration of Time
D	Both (A) and (B)

Q9	One Joule is equivalent to ____________.
A	Nm
B	Nm^2
C	Nm^-1
D	Nms^-1

Q10	Kent reads book, draws diagram, organises her thought, collects question paper, attends class. All this ‘hard work’ may involve __________ ‘work’.
A	Too Much Work
B	Very Little Work
C	Little Work
D	No Work

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