science
Grade6
Easy
Question
In which of the following conditions does the light bend?
- When it moves through a narrow hole
- When it passes by a sharp edge
- When it gets into another medium
- All of the above
Hint:
If light enters into a substance with a lower refractive index (such as from water into air) it speeds up.
The correct answer is: All of the above
- If light enters any substance with a higher refractive index (such as from air into glass) it slows down. The light bends towards the normal line. If light enters into a substance with a lower refractive index (such as from water into air) it speeds up. The light bends away from the normal line.
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Arrange the following events in the right order.
a. Light from the object enters the eyes of the person.
b.The signals from the retina are carried to the brain via optic nerve.
c. The eye lens focuses a real and inverted image of the object onto the retina.
d. The light from the sun falls on the object and gets reflected.
e. The brain interprets the signals and shows an upright image to the person.
Arrange the following events in the right order.
a. Light from the object enters the eyes of the person.
b.The signals from the retina are carried to the brain via optic nerve.
c. The eye lens focuses a real and inverted image of the object onto the retina.
d. The light from the sun falls on the object and gets reflected.
e. The brain interprets the signals and shows an upright image to the person.
scienceGrade-7
