Question

The physical quantity that does not have
dimensional formula [ML-1T
-2] is

1) force

2) pressure

3) stress

4) modulus of elasticity

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Answer 1

Answer:

Force ... it's dimension is M¹L¹T⁻².

Answer 2

→ The trick here is that several different things resolve to multiplication, and thus the same thing multiplied by different multiplies have different units, but the same dimension.

→ DV² pressure = force / area. Energy density = energy / volume.

→ pressure is in newtons per sq metre. Choric energy is in newton-metres per cu metre.

→ DV^5T^3 Energy = force · length, Torque = force × length,

→ energy is in foot-poundals or joules. torque is in poundal-feet or metre-newtons.

→ DV^5T^2 Power (W) is the rate of energy dissipation, Reactive power volt-ampere is the product of the peak voltage and the peak current, is typically twice the power, but can be different.

HOPE IT HELPS