JEE Main · Mock testTimed mock exam
Diffraction and Gratings: Timed Test
A timed test in the JEE Main pattern: 10 questions in 25 minutes, +4 for a right answer and -1 for a wrong one.
PhysicsHigh School (11–12)
- questions
- 10
- minutes
- 25
- marks
- 40
- right / wrong
- +4 / −1
questions
minutes
marks
right / wrong
The clock starts when you press Begin, after the instructions.
Exam pattern
| Part | Questions | Marks |
|---|---|---|
| All questions | 10 | 40 |
Marking
- Right answer: +4
- Wrong answer: −1
- Left blank: 0
Time
25 minutes on one clock, from when you begin.
Syllabus covered
3 chapters · All from Class 12.
- Wave Optics7
- Refraction of Light2
- Prisms and Dispersion of Light1
Before you start
- It runs like an online exam: one question at a time, with a palette showing what you have answered, skipped or marked for review.
- The clock starts when you press Begin the test, after you have read the instructions, and keeps running even if you reload or leave. At zero, your saved answers are submitted.
- The test opens in full screen where your device allows it. Leaving full screen or switching to another tab or app is recorded with your attempt, and whoever set the test can see it. Your own count shows at the top of the test.
- Your score, the answers and the explanations show when you finish, with where you stand among everyone who has taken it.