Assertion (A) Electromagnetic waves exert pressure, called radiation pressure. Reason (R) This is because…
Assertion (A) Electromagnetic waves exert pressure, called radiation pressure.
Reason (R) This is because they carry energy.
Both $A$ and $R$ are true and $R$ is a correct explanation for $\mathrm{A}$.
Both $A$ and $R$ are true but $R$ is not a correct explanation for $\mathrm{A}$.
$A$ is true but $R$ is false.
$A$ is false but $R$ is true.
Solution
Electromagnetic waves (EMW) exerts pressure, called radiation pressure.
In perfect reflecting waves, $p=2 I / C$
In perfect absorbing waves, $p=I / C$
So, Assertion is true.
EMW exert pressure on the surface because they carry energy also.
Therefore reason is also true.
But, Reason (R) is not a correct explanation of Assertion (A).