Which of the following will have the dimensions of time?
LC
R / L
L / R
C / L
The maximum and minimum temperatures at a place are(40.6 ± 0.3)°C and (32.4 ± 0.2)°C.Calculate the difference in the temperatures with error limits.
(8.2 ± 0.5)°C
(8.0 ± 5.0)°C
(8.2 ± 5.0)°C
(8.0 ± 0.5)°C
The radian is the unit of
Angle
Solid angle
Luminous intensity
Temperature
One astronomical unit is
6.024x1226 m
9.46x1015m
1.496x1011m
1.58x105m
If the unit of force and length are doubled, then unit of energy will be :
Same
2 times
4 times
16 times
In SI system of unit,the unit of pressure is
Atmosphere
Dynes per square cm
Pascal
torr
The mass of a substance 3.56 g and its volume is 1.3cm3. The density of the substance is expressed by keeping significant figures in view is
2.7385 g/cm3
2g/cm3
3 g/cm3
2.7 g/cm3
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%
One light year is equal to
9.467x1015 m
9.467x1014m
9.467 x 10 16m
9.467x1010m
The length,breadth and thickness of a block are given by l =12 cm,b=6cm and t=2.45 cm.The volume of the block according to the idea of significant figure should be:
3 x 102 cm3
2 x 102 cm3
4.763 x 102 cm3
None of these
