Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CSE1993
The formation of brilliant colors in soap film is a consequence of the phenomenon of
- A multiple reflection and interference
- B multiple refraction and dispersion ✓
- C diffraction and dispersion
- D polarisation and interference
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
CSE1991
The rainbow and the rainbow-like colors seen on a thin film of oil on a water surface are two phenomena. They are
- A Similar in nature and both are due to refraction of light
- B Different in nature and rainbow is due to interference of light, while colour of thin film is due to diffraction
- C Similar in nature and both are due to interference of light
- D Different in nature and rainbow is due to refraction, while colour of thin film is due to interference of light ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
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