Light with an energy flux 25 10^ 4 Wm ^ -2 falls on a perfectly reflecting surface at…
Chemistry · NEET · NTA Exams — Structure of Atom
Light with an energy flux \(25 \times 10^{4} \mathrm{Wm}^{-2}\) falls on a perfectly reflecting surface at normal incidence. If the surface area is 15 cm2, the average force exterted on the surface is:
- \(1.25 \times 10^{-5} \mathrm{~N}\)
- \(2.50 \times 10^{-6} \mathrm{~N}\)
- \(1.20 \times 10^{-5} \mathrm{~N}\)
- \(3.0 \times 10^{-5} \mathrm{~N}\)
Answer
(A) 1.25 10^ -5 ~N
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- A particle executing simple harmonic motion of amplitude 5 cm has maximum speed of 31.4 cm/s. The frequency…
- The kinetic energy of most energetic electrons emitted from a metallic surface is doubled when the wavelength…
- A proton is accelerated to one tenth the speed of light. Its speed can be measured with a precision of 1%…
- Sodium and Copper have work functions 2.3 eV and 4.5 eV respectively. Then, the ratio of their threshold…
- A metal surface is illuminated one by one by photons of energy 1 eV and 2.5 eV respectively. The work…
- What hydrogen-like ion has the wavelength difference between the first line of Balmer and Lyman series equal…
- The ratio of the energy of a photon of 200 A wavelength radiation to that of 4000 A radiation is:
- The ionization energy of Li 2 + is equal to
More Structure of Atom questions · Browse all practice questions