Dual Nature of ...

A photoelectric cell is lightened by a light source, situated at a distance d from the cell. If distance becomes $$d/2$$ then number of electrons emitted per sec will be:- 

In stopping potential ($$V$$) photo current ($$I$$) graph, if $${V}_{2}> {V}_{1}$$ then compare the wavelengths of incident radiations

The de-Broglie wavelength of a proton accelerated by $$400\ V$$ is

Find the number of electrons emitted per second by a $$24 W$$ source of monochromatic light of wavelength $$6600 A$$ assuming $$3%$$ efficiency for photoelectric effect (take $$h = 6.6 \times 10_34 \, Js$$)

A proton and an electron are accelerated by same potential difference starting from rest have de- Brogile  wavelength $$\lambda _ { p }$$ and $$\lambda _ { e ^ { * } }$$ 

For $$\gamma$$ photon emission, Which is in correct ?

The phenomenon of photo emission depends on-

A particle $$A$$ of mass $$m$$ and initial velocity $$v$$ collides with a particle $$B$$ of mass $$\dfrac {m}{2}$$ which is at rest. The collision is held on, and elastic. The ratio of the de-Broglie wavelength $$\lambda_{A}$$ to $$\lambda_{B}$$ after the collision is

A heavy nucleus at rest breaks into two fragments which fly off with velocities in the ratio $$8:1$$. the ratio of de-broglie wavelengths of fragments are 

Graph is plotted between maximum kinetic energy of electron with frequency of incident photon in Photo electric effect. The slope of curve will be :