Verified Solution • 2025–26 Session moderate

QJEEM19Phf2b5: JEE Main 2019 Physics - Class 12 JEEM19Phf2b5 Solution: Light is incident normally on a completely absorbing surface…

Light is incident normally on a completely absorbing surface with an energy flux of 25 W cm–2. If the surface has an area of 25 cm2, the momentum transferred to the surface in 40 min time duration will be :

Multiple Choice Options

  • A 6.3 × 10–4 Ns
  • B 5.0 × 10–3 Ns
  • C 1.4 × 10–6 Ns
  • D 3.5 × 10–6 Ns

Step-by-Step Verified Solution

P=ΔEC

=(25×25)×40×603×108N−s

=5×10−2N−s

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