Q

Why does cloth that appears green in sunlight appear black under red light?

RRB NTPC (Stage-I) 31/03/2016 / Shift-II 2016
✓ Answer: A The cloth completely absorbs the red wavelength
A green cloth reflects green light but absorbs most red light, so it appears dark under red illumination.
← Previous Question Next Question →

📚 Related Questions — Light

1 Convex mirrors are used as: 2 The image formed by a convex mirror is always: 3 A convex mirror has radius of curvature 15 cm. Under the Cartesian… 4 A magic mirror shows a boy’s head at the same size, middle… 5 An object is 18 cm before a convex mirror of focal length… 6 The refracted ray inside the prism bends ________.