Precision testing in 30 minutes
Twenty adaptive questions that adjust difficulty after every response, giving you a verified diagnosis of what you know and where you need review.
Diagnostic Assessment Test
Two cylindrical conductors of equal length and uniform material have radii r₁ and r₂. If their resistance ratio is R₁/R₂ = 4:1, determine the ratio of their cross-sectional radii r₁/r₂.
Item Response Theory models calculate student ability after each answer, adjusting the next question to target the edge of your understanding.
Questions span single-choice, assertion-reasoning pairs, multi-step numericals, and case study comprehension stems.
Tracks hesitation time, answer revisions, and pacing metrics to separate quick guesses from thoughtful problem-solving.
Fullscreen lock, keyboard navigation shortcuts, and structured reference sheets keep the focus on solving problems.
Outcome guarantee: Every completed test generates a concept-by-concept weakness diagnosis with a direct revision plan.
A tutor that knows your exact chapter
Unlike generic chatbots, LearnLens locks onto your grade, subject, and current concept. Select any of the 8 dedicated study modes to resolve doubts without hallucinations.
Explain Mode Active
Bound to: Pair of Linear Equations
"Why do we multiply the equations before subtracting in the elimination method?"
You multiply by the opposing coefficient to make one variable have identical values. When you subtract equation (2) from (1), that target variable cancels to 0, leaving a single linear equation you can solve in one step.
Try Explain mode on your curriculum
Explore sample Class 10 problems in mathematics, science, and social studies.
Traditional scores hide what students actually need
See the difference between an ambiguous score and multi-dimensional diagnostic intelligence.
Grade: B • 18 of 25 Questions Correct
Flat single percentage
A 72% mark masks whether a student failed algebra foundations or made minor calculation slips.
Vague next steps
Generic remarks like 'needs more practice' leave students guessing what topics to study.
No concept-level recovery
Tests are archived without targeted follow-up or validation of recovered weak areas.
AI Diagnosis: Strong analytical reasoning, but confused trigonometric identity signs during step 3.
LearnLens doesn’t just tell students what they scored. It tells them what they need to do next.