Question

IV. True or False
State whether the given statements are true or false.
1. Deficiency of vitamin B causes night blindness.
2. In the Braille system, patterns are made with coloured dots.
3. Normal make 60° angle with the reflecting surface.
4. Angle of incidence is always equal to angle of reflection.
5. Diffused reflection occurs due to rough surface.
6. Kaleidoscope is based on the principle of dispersion of light.
7. Both incident ray and reflected ray lie in the same plane.
8. The choroid prevents the internal reflection of light and protects the light sensitive inner parts of the eye.
9. Rainbow forms due to dispersion.
10. Rods are sensitive to bright light.
11. The iris is the coloured part of the eye.
12. Diffused reflection is due to the failure of laws of reflection.
13. Ciliary muscles changes the shape of the lens in the eye.
14. We should not wash our eyes.
15. Braille was designed by Louis Braille.

Answer 1

Answer:

• true
• true
• false
• true
• false
• false
• false
• true
• true
• false
• true
• false