Short tricks for jee mains ( Dimensional formula)

The dimensional formula of couple

The dimensional formula of mc^(2) is :

The dimensional formul for impulse is same as the dimensional formula for

What is the difference between a dimensional formula and a dimensional equation?

What is the dimensional formula of loudness?

The pair of physical quantities not having the same dimensional formula is

The pair of physical quantities not having the same dimensional formula is

Which of the following dimensional formula is incorrect

The mechanical equivalent of heat (1) has the same dimensional formula as heat (2) has the same dimensional formula as worked (3) has the same dimensional formula as energy (4) is dimensionless

Dimensional formula for strain is