Motion And Time

Physics
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Speed of a body depends on 

A
Time 
B
Mass of the body 
C
Distance travelled by the body 
D
Both A and C
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Name one unit of time bigger than a second. 

A
plank time
B
zeptosecond
C
picosecond
D
kilosecond
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Unit of Time is:

A
Metre
B
Kilometre
C
Second
D
None of these
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Assertion

100 years make 10 decades.

Reason

Every century is divided into 10 decades.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Assertion is incorrect but Reason is correct
Medium
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