The phenomenon responsible for the working of optical fibre is:
Anonymous Quiz
9%
A. Reflection
17%
B. Refraction
68%
C. Total internal reflection
6%
D. Dispersion
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The power of a lens is +2 D. Its focal length is:
Anonymous Quiz
61%
A. 0.5 m
20%
B. 2 m
13%
C. –0.5 m
6%
D. –2 m
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When light travels from air to glass, it:
Anonymous Quiz
32%
A. Bends away from normal
63%
B. Bends towards normal
3%
C. Does not bend
3%
D. Gets totally reflected
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♦️ Class 12 Physics Board Exam Strategy 2026
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♦️ Ab Physics ko padho SMART tareeke se🔥
♦️ Chapterwise Weightage ✅ Marks Distribution ✅ Time Management ✅
♦️ Ab Physics ko padho SMART tareeke se🔥
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The magnification produced by a plane mirror is:
Anonymous Quiz
38%
A. +1
11%
B. –1
27%
C. 0
24%
D. Infinity
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Class 12 Maths - MOST IMPORTANT Competency Based Questions (CBQs) | CBSE 2026 Exam | Kuldeep Sir
In this session, Kuldeep Sir covers the most important Class 12 Maths Competency Based Questions, including Case Based Questions and assertion and reasoning questions, as per the latest CBSE 2026 exam pattern.
What you will learn in this video:
✔ Class 12…
What you will learn in this video:
✔ Class 12…
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Critical angle depends on:
Anonymous Quiz
34%
A. Only angle of incidence
18%
B. Only refractive index
6%
C. Wavelength of light
42%
D. Both B and C
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In refraction through a rectangular glass slab, the emergent ray is:
Anonymous Quiz
51%
A. Parallel to incident ray
28%
B. Perpendicular to incident ray
13%
C. Along the normal
9%
D. Totally reflected
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