Which of them is not correct?
W.K. Roentagen : X -rays
Albert Einstein : Theory of relativity
M.N. Saha : Thermal isolation
Enrico Fermi : Measurement of e– charge
Who formulated the laws of planetary motion?
Issac Newton
Johannes Kepler
Tycho Brahe
Albert Einstein
One Parallactic second is equal to:
9.4605x 1015m
3.084x1016m
6.67x10-11 m
3 x 108 m
_________ is a unit of pressure.
Bar
Lux
Ohm
Erg
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 volume of a cube of side 1 cm is equal to _____ m3.
106
10-6
105
10-5
The number of significant figures in 0.007m2 is
1
2
3
4
A cube has a side 2.41m. The total surface area of the cube with regard to significant figures is
5.81 m2
5.8081m2
34.8486m2
34.84 m2
Which of the following is a dimensional constant?
Refractive index
Poisson's ratio
Relative density
Gravitational constant
The angle subtended by a satellite by the two directions of observation is 2.552 x 10-2 rad.If the diameter of earth is 1.276 x 107m. What is the distance of the satellite from the earth?
6 x 108 m
5 x 108m
2.5 x 108m
4 x 108m
