The minimum light intensity that can be perceived by the eye is about `10^(-10). W m^(-2)`.The number of photons of wavelength `5.6xx 10^(-7) m` that must enter the pupil of area `10^(-4) m^2` per second for vision is approximately.

Name the part of the electromagnetic spectrum of wavelength 10^-2 m

A photon of wavelength 4 xx 10 ^(-7) m strickes on metal surface, the work function of the metal being 2.13 eV. Calculate energy of the photon (eV)

A source produces a sound of wavelength. 1.7 xx 10^-2 m . If its velocity is 343.4 ms ^-1 , then find frequency of sound.

Name the part of the electromagnetic spectrum of wavelength 10^2 m

Estimating the following numbers should be interesting. The number tells you why our eye can never count photons, even in barely detetable light. The number of photons entering the pupil of our eye per second corresponding to the minimum intensity of white light that we humans can perceive (~10^-10 Wm^-2) . Take the area of the pupil to be about 0.4 cm^2 , and the average frequency of white light to be about 6 xx 10^14 Hz .

The solubility product of AgCl is 10^(-10)M^(2) . The minimum volume ( in m^(3)) of water required to dissolve 14.35 mg of AgCl is approximately :

A photon of wavelength 4 xx 10 ^(-7) m strickes on metal surface, the work function of the metal being 2.13 eV. Calculate the kinetic energy of the emission

Green light of mercury has a wavelength 5*5 xx 10^(-5) cm. What is the wavelength in glass,if refractive index of glasss is 1.5?Given, c=3 xx 10^8 m s^(-1) .