MEDIUM
10th ICSE
IMPORTANT
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A tank appears shallower than its actual depth. why?

Important Questions on Refraction at Plane Surfaces

MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 4 - Refraction at Plane Surfaces>QUESTIONS>Q 16
A pencil dipped in water appears broken and shortened in length. Why?
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 4 - Refraction at Plane Surfaces>QUESTIONS>Q 17
Explain why a print paper appears to be raised when a glass block is placed over it.
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 4 - Refraction at Plane Surfaces>QUESTIONS>Q 18
Why the stars in the sky appear twinkling but planets do not?
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 4 - Refraction at Plane Surfaces>QUESTIONS>Q 19
A coin placed in a container is not visible from a certain position from outside. Describe a method with the use of water to make the coin visible from the same position.
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 4 - Refraction at Plane Surfaces>QUESTIONS>Q 20
Thickness of a transparent slab is 12cm. A point object when placed at the bottom of the slab appears raised by 4cm. What is the refractive index of the slab?
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 4 - Refraction at Plane Surfaces>QUESTIONS>Q 21
Apparent depth of a swimming pool is 1.5m. What is the real depth of the pool? μw=1.33
HARD
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 4 - Refraction at Plane Surfaces>QUESTIONS>Q 22
A bird is flying at the height of 3 m above the river surface while a fish is 4 m below the surface. At what depth would the fish appear to the bird? At what height the bird would appear to the fish? Given refractive index of water with respect to air μwa=4/3
HARD
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 4 - Refraction at Plane Surfaces>QUESTIONS>Q 23

Figure shows two unmixable transparent liquids refractive indices μ1 and μ2 filled in a container. The depth of each liquid is d. Calculate apparent depth of a coin placed at bottom of container.

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