16. If the units of mass, length and time are doubled unit of angular momentum will be
a. Doubled b) 8 times the original value c) Quadrupled d) Tripled
17. A physical quantity is measured and its value is found to be nu where n = numerical
value and u = unit. Then which of the following relations is true.
a)
2
b) c ) d) n 1/u
18. Newton/ metre2
is the unit of
a. Energy b) Momentum c) Force d)Pressure
19. If the acceleration due to gravity is 10 ms-2 and the units of length and time are
changed in kilometre and hour respectively, the numerical value of the accelerationis
a) 360000 b) 720000 c) 360000 d) 129600
20. Which of the following relations is dimensionally correct:
a) V2 = u2 + 2as b) V2 = u2 + 2as2
c) V2 = u2 + 2a2
s d) V2 = u2 + 2 a
2
s
2
21. A particle has an acceleration of 1.8 km/minute2
.In S.I it's acceleration is Light year
is a unit of
a)Time b) Mass c) Distance d) Energy
22. Density of liquid in C.G.S system is 0.625 ⁄3 What is its magnitude in S.I system
a)0.625 b) 0.0625 c) 0.00615 d) 625
23. The mass of block of wood is 87.2 gm and its volume is 25 cm3
. Its density upto
the correct significant figures is
a)3.388g/cm b)3.5g/cm3
c)3.48g/cm3 d)3.4g/cm3
24. Joule sec is the unit of
a)Work b) Angular momentum c) Planck’s constant d) both b & c
25. Which of the following measurement is most significant
a) 0.005 mm b) 5.00 mm c) 50.00 mm d) 5.0 mm
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