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Evan Toh
Jan 1, 20240 min read
Evan Toh
Jan 1, 20240 min read
Identifying what lens, focal length and image from 2 rays – PP2010P1Q23 and SP2014P1Q11
These 2 questions are actually the same. Q23 is from 2010 Pure Physics P1 while Q11 is from 2014 Sci Physics P1. Take a look at these 2...
Evan Toh
Jan 1, 20241 min read
Where is the focal point of lens L1 and L2?
Answer: Option A Refer to the diagram (below left) which many are familiar. When parallel rays of light which are parallel to the...
Evan Toh
Jan 1, 20241 min read
Evan Toh
Jan 1, 20241 min read
Total Internal Reflection (TIR) example 02
Solutions: a) 38.8o b) 41.8o c) 51.2o . The ray does not emerge as total internal reflection has occurred. The angle of incidence is...
Evan Toh
Jan 1, 20241 min read
Evan Toh
Jan 1, 20241 min read
Lens, screen and mirror – what kind of image formed on screen
Answer: Option C
Evan Toh
Jan 1, 20241 min read
Evan Toh
Jan 1, 20240 min read
Evan Toh
Jan 1, 20241 min read
Evan Toh
Jan 1, 20240 min read
Evan Toh
Dec 1, 20230 min read
Evan Toh
Dec 1, 20230 min read
Demonstration of Reflection, Refraction and TIR using light source with a slit
Reflection of light using a mirror Refraction of light using various shaped optical mediums Total Internal Reflection (TIR) using a...
Evan Toh
Dec 1, 20231 min read
Endoscope - Refractive Index
Using the formula n = 1/sin c, the higher the n , the smaller the c . With smaller c , total internal reflection can occur over a wider...
Evan Toh
Dec 1, 20231 min read
PP2010P1Q23 and SP2014P1Q11 - Identifying what lens, focal length and image from 2 rays
These two questions are actually the same. Q23 is from 2010 Pure Physics P1 while Q11 is from 2014 Sci Physics P1. Take a look at these 2...
Evan Toh
Dec 1, 20231 min read
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