If the reports of the external
examiners as well as the report of the Research Guide are all positive,
and only minor changes or revisions are required, the Convenor,
on behalf of the SBP, gives the permission for the Viva-voce Examination
(or thesis defence). Till this permission is
received, the Research Guide should not undertake any communication with
the external examiner(s).
Once the permission is received,
the following committee is set up to conduct the Viva-voce examination.
examiner who works in India;
representative of the Subject Board of Physics.
The Viva-voce examination will be
set up at a date and time convenient to all concerned, with the help of
the University Cell. The Research Guide is normally expected to use his
good offices to help the University Cell in setting up the examination.
One or more of the principals may participate by video-conferencing, if
required. The travel and local hospitality of the external examiner, if
he/she travels to TIFR for the Viva-voce examination, will be taken care
of by TIFR, in addition to the honorarium due for his/her services.
The Viva-voce examination consists of three parts.
(a) An open seminar by the candidate, lasting not
less than 45 minutes, which highlights the research work presented in the
thesis. This may be attended by any interested person(s), in addition to
(b) An open question-and-answer session, during which anyone in the
audience of the open seminar (including the examiners) may ask questions
or make comments on the material presented in the seminar.
(c) An in-camera examination, where only the candidate and the
examiners will be present. In this part, the candidate may be asked
searching questions to determine his/her level of involvement in the
research work presented in the thesis (see below). †
At the end of the examination, the
examiners, after due deliberation, may decide if the Ph.D. degree can be
awarded on the basis of the thesis and the Viva-voce examination. This
must be recorded on the Viva-voce Evaluation Form and signed by all three
examiners. If any of the examiners is participating by
video-conferencing, he/she should promptly send a scanned copy of the filled-in
form, signed by himself/herself to the other examiners for signing. The
signed form should be submitted immediately to the University Cell for
The Research Guide or any of the
examiners may inform the candidate of the results of the Viva-voce
examination as soon as the form is submitted to the University Cell. A
Provisional Certificate will be issued to the candidate within one or two
days from submission of the results.
of the Research Guide during the Viva-voce (in person or by
video-conferencing) is mandatory. In case of joint guidance, at least
one of the Guides should be present.
external examiner working in India is unable, for some reason, to
attend the Viva-voce examination, a substitute examiner may be
appointed by the Convenor, SBP. This should,
however, be considered a last resort.
representative on the panel of examiners is usually either the SBP
representative for the relevant Department, or the Chair of the
Department. However, any other member of the same Department can be
nominated as substitute, if it found necessary. The SBP representative
on the panel of examiners will chair the session during the Viva-voce
examination and the deliberations which follow.
Before deciding to award the Ph.D. degree,
the examiners should satisfy themselves of the following points.
The results presented in the seminar are, on
the whole, identical with those presented in the thesis.
The candidate can present the research work
competently and comprehensively, without help from any person(s).
The candidate can answer searching questions
indicating that the work was actually carried out by him/her.
Any queries, doubts or clarifications raised
by the external examiners have been answered adequately in the revised
version of the thesis.
The candidate can think clearly and
rationally about the topic of his/her research.
In case the examiners are not satisfied with the Viva-voce examination,
a re-examination may be set up at a date and time convenient to the
candidate and the examiners. In extreme cases, a negative report of the
Viva-voce examiners may lead to denial of the Ph.D. degree.