Page 91 - CT&AI_CLasa_7_Part_1

9. Priya is standing in front of a large mirror and 10. You are in a room that is completely black (no
combing her hair with her right hand. As she windows, no lights). You hold a high-quality
looks in the mirror, she notices something plane mirror 10 cm in front of your face. Will
strange. Which hand is the image using to you be able to see your reflection?
comb the hair? (Pattern recognition) (Abstract Thinking)
(a) Yes, because mirrors always show
(a) The image is also using its right a reflection regardless of light.
hand, same as Priya.
(b) Yes, because your eyes will
(b) The image appears to be using its eventually adjust to the dark and
left hand due to lateral inversion. see the mirror.

(c) The image appears upside down (c) No, because there is no light source
to reflect off your face onto the
instead of flipped sideways.
mirror.
(d) The image does not use any hand (d) No, because mirrors only work
because it is only a reflection. when the Sun is out.

During the day, you can see clearly through a glass window into the garden.
However, at night, when the room lights are on, the window acts like a mirror,
and you can see your own reflection instead of the garden. Why?

(a) The glass changes from transparent to opaque at night.

(b) The cold night air turns the glass into a mirror.

(c) The light inside the room is brighter than outside, making the reflection
from the glass visible.

(d) Your eyes become stronger in the dark.

Light: Shadows and Reflections 89