How many significant figures are present in the expression 0.009 m ?
3
2
1
4
In a vernier callipers N divisions of vernier scale coincide with N - 1 divisions of main scale (in which length of one division is 1 mm).The least count of the instrument should be
N
N - 1
1/10N
1/(N - 1)
SI unit is
rational
coherent
metric
all of the above
The difference of two values 10.5682 g and 10.10 g upto correct significant figures is
0.4682 g
0.468 g
0.47 g
0.5 g
[ML-1T-2] is the dimension of
Pressure and Young's modulus
Work and torque
Pressure and Force
Young's modulus and momentum
One meter = ______AU
6.67 x 10-12 AU
1.58 x 10-5 ly
4.86 x 10-6 AU
1.057 x 10-10 ly
The dimensional formula for frequency is
T
T-1
T-2
T2
Distance of a star from earth is 1.5 x 1011 m.If the angular size of the star is 2000″.Find the diameter of the star.
1.455 x 109 m
14.55 x 109 m
1.155 x 105 m
1.455 x 107 m
900 is equal to how many radians?
1.57 radians
1.75 radians
3.14 radians
2.57 radians
If we select the unit of acceleration as 980 cm/s2 and unit of velocity as 3 x 1010cm/s the unit of time will be
4.6 x 107s
3.6 x 106s
3.06 x 107s
4.66 x 107s
