26. Which one is not a unit of time?
(a) Leap year
(b) Year
(c) Shake
(d) Light year
27. “Parsec” is the unit of :
(a) time
(b) distance
(c) frequency
(d) angular acceleration
28. One light-year distance is equal to :
(a) 9.46 × 1010 km
(b) 9.46 × 1012 km
(c) 9.46 × 109 km
(d) 9.46 × 1015 km
29. Parallactic second is equal to :
(a) 9.4605 × 1010 m
(b) 3.07 × 1016 m
(c) 1.496 × 1011 m
(d) 3 × 108 m
30. The dimensions of impulse are equal to that of :
(a) force
(b) linear momentum
(c) pressure
(d) angular momentum
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