One Fermi is equal to:
10-7m
10-8m
10-15m
10-10m
The sides of a rectangular lamina are (8.5 ± 0.2)cm and (5.6 ± 0.1) cm.Calculate the perimeter of the lamina with error limits.
(28.2 ± 0.6) cm
(2.82 ± 0.6) cm
(2.82 ± 6.0) cm
(28.2 ± 6.0) cm
The number of significant figures in 0.007m2 is
1
2
3
4
Chandrasekhar Limit is the unit of:
Distance
Time
Intensity
Mass
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
In an experiment the angles are required to be measured using an instrument.29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale.If the smallest division of the main scale is half - a - degree (=0.5°), then the least count of the instrument is
one minute
half minute
one degree
half degree
A LASER beam at moon returns after 2.56 s from moon.What is the radius of the orbit of moon (lunar orbit) around the earth?
3.84 x 108 m
3 x 108 m
3.84 x 104 m
3.84 x 1010 m
A Vernier Callipers with 1MSD = 1cm has 5 divisions as the vernier. The least count is
0.8 mm
0.8 cm
0.4 cm
0.5 cm
The velocity v of a particle at time t is given by v = at + b / t + c,where a,b and c are constants.The dimensions of a,b and c are respectively
[LT-2], [L] and [T]
[L2] ,[T] and [LT2]
[LT2] ,[LT] and [L]
[L] ,[LT] and [T]
The density of a cube is measured by measuring its mass and length of its sides.If the maximum error in the measurement of mass and length are 4% and 3% respectively,the maximum error in the measurement of density will be
7 %
9 %
12 %
13 %
