P represents radiation pressure, c represents speed of light

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P represents radiation pressure, c represents speed of light and S represents radiation energy striking unit area per sec. The non zero integers x, y, z such that P^x S^y c^z is dimensionless are

1. x = 1, y = 1, z = 1
2. x = – 1, y = 1, z = 1
3. x = 1, y = – 1, z = 1
4. x = 1, y = 1, z = – 1

Correct Option: C

Try out the given alternatives.
When x = 1, y = – 1, z = 1

P^x S^y c^z = P¹ S^-1 c¹ =	Pc
	S

=	[M L^{– 1} T^-2 [LT^{– 1}]	= M⁰L⁰T⁰
	[M L² T^{– 2} / L² T]