P6Jiggasha: Benchmarking Large Language Models on Bangla Physics Question Answering with Cross-lingual Evaluation
S.m. Shahriar, Md Tahmid Hasan Fuad, Md Fahim, Md. Azad Hossain
Abstract
Understanding scientific concepts in native languages is crucial for educational accessibility and knowledge transfer. In this work, we present a comprehensive evaluation of Large Language Models (LLMs) on Bangla physics questions, introducing P6Jiggasha, a novel dataset of 1,500 multiple-choice questions compiled from HSC physics textbooks, supplementary guides, admission preparation books, and past examination papers from various educational boards. We evaluate three state-of-the-art models—GPT-4.1, Gemini-2.5 Pro, and DeepSeek-R1-Distill-Llama-70B—on both native Bangla questions and their English translations. Our results reveal significant performance variations, with GPT-4.1 achieving 86.67% accuracy on Bangla questions in a single inference, while other models show substantial improvement through multiple inference attempts, with Gemini-2.5 Pro reaching 89.52% after four iterations. We introduce a Cumulative Accuracy@k metric to evaluate iterative reasoning capabilities and provide comprehensive analysis across six physics topics and six question types. Our error analysis reveals systematic cross-lingual inconsistencies where models produce contradictory answers for identical questions across languages. This study provides valuable insights into the capabilities and limitations of current LLMs for low-resource scientific question answering and establishes benchmarks for future research in Bangla natural language processing.- Anthology ID:
- 2025.banglalp-1.16
- Volume:
- Proceedings of the Second Workshop on Bangla Language Processing (BLP-2025)
- Month:
- December
- Year:
- 2025
- Address:
- Mumbai, India
- Editors:
- Firoj Alam, Sudipta Kar, Shammur Absar Chowdhury, Naeemul Hassan, Enamul Hoque Prince, Mohiuddin Tasnim, Md Rashad Al Hasan Rony, Md Tahmid Rahman Rahman
- Venues:
- BanglaLP | WS
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 196–211
- Language:
- URL:
- https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.banglalp-1.16/
- DOI:
- Cite (ACL):
- S.m. Shahriar, Md Tahmid Hasan Fuad, Md Fahim, and Md. Azad Hossain. 2025. P6Jiggasha: Benchmarking Large Language Models on Bangla Physics Question Answering with Cross-lingual Evaluation. In Proceedings of the Second Workshop on Bangla Language Processing (BLP-2025), pages 196–211, Mumbai, India. Association for Computational Linguistics.
- Cite (Informal):
- P6Jiggasha: Benchmarking Large Language Models on Bangla Physics Question Answering with Cross-lingual Evaluation (Shahriar et al., BanglaLP 2025)
- PDF:
- https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.banglalp-1.16.pdf