13. Two friends Kapil and Rohit were studying in the same class. One day Rohit observed
that Kapil was having pain in gums during lunch time. Rohit told Kapil that his father
was dentist and asked him to visit his father's clinic. Rohit's father examined Kapil
with the help of a mirror and advised him not to eat too many chocolates and soft
drinks. Kapil follow ed the advise of the doctor and soon he got recovered. After that
he starts taking care of his mouth, as he washes his mouth properly after every meal
and also starts taking a calcium rich diet. Read the given passage and answer the
following questions: (3)
i Identify the mirror used by the dentist.
ií Name the phenomenon of light by which doctor is able to exam ine Kapil.
iii. What values are shown by doctor, his son and Kapil?
Answers
Concave Mirrors
Explanation:
i) The mirror used by the dentist is a spherical mirror named as Concave Mirror. When a hollow sphere is cut into two halves and the outer surface is painted then the inner surface acts as a reflecting surface. This type of mirror is known as converging or concave mirror.
ii) The phenomenon of light by which doctor is able to examine Kapil is Reflection of Light. When a ray of light reaches a smooth polished surface and it bounces back, it is known as the reflection of light.
iii) The doctor advised Kapil to take care of his mouth by not eating too many chocolates, and also to wash his mouth after every meal.
His son, Rohit is helpful and caring in nature. He saw the pain of his friend and took him to his father who is a dentist immediately.
Kapil is represented as an obedient boy as he followed the advice of the dentist carefully.
Refer to the attached pic for concave mirror.
