EASY
7th CBSE
IMPORTANT
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Which mirror is used as a dentist’s mirror?

Important Questions on Light

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 15 - Light>Oral Questions>Q 5
Which mirror is used as a side-view mirror in automobiles?
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 15 - Light>Oral Questions>Q 1
A lens is thicker at the edges and thinner in the middle. Can it burn pieces of paper by focussing sunlight?
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 15 - Light>Oral Questions>Q 2
A lens always forms a diminished, erect and virtual image. Identify the nature of the lens.
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 15 - Light>Oral Questions>Q 3
A lens forms a magnified, erect and virtual image when an object is placed very close to it. Identify the lens.
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 15 - Light>Oral Questions>Q 4
Which lens is used for correcting the long-sightedness?
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 15 - Light>Oral Questions>Q 5

Each lens has a point, a ray passing through it goes without deviation. What is the name of that point and where is it located?

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 15 - Light>Oral Questions>Q 1
Name a triangular pyramidal piece of glass that splits white light into lights of seven colours.
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 15 - Light>Oral Questions>Q 2

Which of the seven colours deviates (a) the least and (b) the most, when a ray of white light travels through a prism?