ICSE Class 10 Ray Optics and Optical Instruments — Mock Test (2027)
Free online mock test for Ray Optics and Optical Instruments (ICSE Class 10 Physics) — 88 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the Ray Optics and Optical Instruments chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
-
1.The least distance of distinct vision D for a normal eye is taken as about:
- A.10 cm
- B.25 cm
- C.50 cm
- D.100 cm
-
2.A 90-degree totally reflecting prism made of crown glass works because:
- A.Its refractive index is exactly 1
- B.Its critical angle is less than 45 degrees, so light striking a face at 45 degrees is totally internally reflected
- C.Light is absorbed and re-emitted
- D.The prism disperses the light
-
3.![prism_deviation.png]() For the prism shown, the angles of refraction at the two faces are r1 and r2 and the refracting (apex) angle is A. The correct relation between them is:
- A.r1 + r2 = A
- B.r1 + r2 = 2A
- C.r1 - r2 = A
- D.r1 = r2 = A
-
4.A tank is filled with water to a height of 12.5 cm. A needle at the bottom appears to be at a depth of 9.4 cm. The refractive index of water is about:
- A.1.16
- B.1.33
- C.1.50
- D.0.75
-
5.A convex lens of focal length 30 cm is placed in contact with a concave lens of focal length 20 cm. The combination has focal length:
- A.+60 cm, converging
- B.-60 cm, diverging
- C.+12 cm, converging
- D.-12 cm, diverging
Want the full 88-question test with instant marking & AI feedback?
Sign up free →