Question

6. A metre scale has broken into two pieces. On the first piece, the reading starts at 0 cm and
comes to end at 54.5cm. The second, broken piece starts at 54.5 cm and comes to end at
100cm. What is the length of second piece of broken scale?
a.
54.5 cm
b. 55.5 cm
C
53.6 cm
d. 55.4 cm
7. Kamala measured the size of blackboard. The length of the black board is 11m and the
height is 8 m. The area of the blackboard is
a.
88m
b. 88m²
C.
88m2
d. 88 cm
8. Kavitha found the area of circular garden is 154 m². Find the diameter of the circle?
a.
7m
b. 14m
C.
14cm
d. 7cm​

Answer 1

Answer:

some materials bend light more than other materials

a material slows down some colors more than others

a material changes some colors more than others

light has different speeds in different materials

Answer: B

Dispersion occurs when a single material bends certain colors of light more than other colors of light. The cause is the fact that different colors of light have different speeds within the same material.