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Back to Work, Energy and Power & Circular Motion
Class 11 • Physics • Chapter-5
Work, Energy and Power & Circular Motion
Question 358 of 359
358
Medium
JEE Advanced
IIT-JEE 1980
If a machine is lubricated with oil
Choose the correct answer:
A
the mechanical advantage of the machine increases
B
the mechanical efficiency of the machine increases
C
both its mechanical advantage and efficiency increases
D
its efficiency increases, but its mechanical advantage decreases
Select an answer first
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