The length, breath and thickness of a block are given by l = 12 cm, b= 6 cm and t = 2.45 cm. The volume of the block according to the idea of significant figure should be
1 x 102 cm2
2 x 102 cm3
1.763 x 102 cm2
None of these
If σ = surface change density, ε = electric permittivity, the dimensions of is same as
electric force
electric field intensity
pressure
electric charge
A gas bubble forms an explosion under water which oscillate with a period T ∝ paρbEc, where p is the static pressure, ρ is the density ofwater and E is the total energy of explosion. Then, the values of a, b and c will be
The physical quantity having dimensions [M-1L-3T3A2] is
resistance
resistivity
electrical conductivity
electromotive force
C.
electrical conductivity
The dimensions of σb4 are (where, σ = Stefan's constant and b = Wein's constant).
[ M0L0T0 ]
[ ML4T-3 ]
[ ML-2T ]
[ ML6T-3 ]
The potential energy of a particle varies with distance x from a fixed origin as ; where A and B are constants. The dimensions of AB are
If the figure below represents a parabola, identify the physical quantities representing Y and X for constant acceleration
X = time, Y = velocity
X = velocity, Y = time
X = time, Y= displacement
X = time, Y = acceleration