मनोवैज्ञानिकसिद्धान्तानां परिप्रेक्ष्ये विद्यार्थिनां समायोजनशैक्षिकोपलब्ध्योः सम्बन्धस्याध्ययनम् A Study of the Relation Between Students Adjustment and Academic Achievement from the Perspective of Psychological Theories