Section42 of The Indian Partnership Act is as follows
DISSOLUTION ON THE HAPPENING OF CERTAIN CONTINGENCIES. Subject to contract between the partners a firm is dissolved (a) if constituted for a fixed term, by the expiry of that term;
(b) if constituted to carry out one or more adventures or undertakings, by the completion thereof;
(c) by the death of a partner; and
(d) by the adjudication of a partner as an insolvent.
now as on date there is no legality of the partnership as the same is disolved on happaning of an event.
NOW YOU CAN DO ONE THING, WRITE TO THE ASSESSING AUTHORITY AND TELL HIM ABOUT THE FACTS AND DO LET HIM KNOW ABOUT THE ADDRESS OF THE SECOND PARTNER SO THAT NEXT SUMMON CAN BE DELIVERED AND EFFECTIVE PROCEEDINGS CAN BE DONE BY THE ITO.
DO ENCLOSE YOUR DAD's DEATH CERTIFICATE