We present optical photometric and spectroscopic observations of supernova 2013ej .
It is one of the brightest type II supernovae exploded in a nearby ( \sim 10 Mpc ) galaxy NGC 628 .
The light curve characteristics are similar to type II SNe , but with a relatively shorter ( \sim 85 day ) and steeper ( \sim 1.7 mag ( 100 d ) ^ { -1 } in V ) plateau phase .
The SN shows a large drop of 2.4 mag in V band brightness during plateau to nebular transition .
The absolute ultraviolet ( UV ) light curves are identical to SN 2012aw , showing a similar UV plateau trend extending up to 85 days .
The radioactive ^ { 56 } Ni mass estimated from the tail luminosity is 0.02 M _ { \odot } which is significantly lower than typical type IIP SNe .
The characteristics of spectral features and evolution of line velocities indicate that SN 2013ej is a type II event .
However , light curve characteristics and some spectroscopic features provide strong support in classifying it as a type IIL event .
A detailed synow modelling of spectra indicates the presence of some high velocity components in H \alpha and H \beta profiles , implying possible ejecta-CSM interaction .
The nebular phase spectrum shows an unusual notch in the H \alpha emission which may indicate bipolar distribution of ^ { 56 } Ni .
Modelling of the bolometric light curve yields a progenitor mass of \sim 14 M _ { \odot } and a radius of \sim 450 R _ { \odot } , with a total explosion energy of \sim 2.3 \times 10 ^ { 51 } erg .