Who gave the Universal Law of Gravitation?
Kepler
Newton
Copernicus
Aryabhatiya
In a vernier callipers, one main scale division is x cm and n divisions of the vernier scale coincide with (n -1) divisions of the main scale.The least count (in cm ) of the callipers is :
(n - 1/ n)x
nx / (n -1)
x / n
x / (n -1 )
If 'King' times displacement is the work. What is the dimension of 'King'?
MLT-1
MLT-2
M2LT-2
M-1 LT-1
The error in the measurement of radius of a sphere is 0.4%.Find the permissible error in the surface area.
8%
0.8%
7%
0.08%
In the addition of following numbers with respect to significant figures find the correct answer 8.31 + 10.6723 + 0.0043
18.9866
19
18.99
18.987
Turpentine oil is flowing through a tube of length l and radius r.The pressure difference between the two ends of the tube is p.The viscosity of the oil is given by
η = p(r2-x2) / 4vl
where v is the velocity of oil a distance x from the axis of the tube.The dimensions of η are
[M0L0T0]
[MLT-1]
[ML2T-2]
[ML-1T-1]
If the unit of force and length are doubled, then unit of energy will be :
Same
2 times
4 times
16 times
The dimensional formula of velocity of gradient is
[M0L0T-1]
[M0LT-1]
[M-1L-1T-1]
[MLT-2]
The number of significant figures in 0.00097 are
5
4
6
2
The dimensional formula for acceleration due to gravity is
LT2
LT-1
LT
LT-2
