Solutions of Refraction of Light (Page No- 219) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Class 10 Physics Solutions By Lakhmir Singh & Manjit Kaur

Class 10 : Solutions of Refraction of Light (Page No- 219) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

The document Solutions of Refraction of Light (Page No- 219) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev is a part of the Class 10 Course Class 10 Physics Solutions By Lakhmir Singh & Manjit Kaur.
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Lakhmir Singh Physics Class 10 Solutions Page No:219

Question 1: If a ray of light goes from a rarer medium to a denser medium, will it bend towards the normal or away from it ?

Solution : It will bend towards the normal.


Question 2: If a ray of light goes from a denser medium to a rarer medium, will it bend towards the normal or away from the normal ?

Solution : It will bend away from the normal.


Question 3: A beam of light travelling in a rectangular glass slab emerges into air. Draw a ray-diagram indicating the change in its path.

Solution : A ray of light travelling from the glass slabs and emerges into the air.

Solutions of Refraction of Light (Page No- 219) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Question 4: A beam of light travelling in air is incident on water. Draw a ray-diagram indicating the change in its path in water.

Solution :

Solutions of Refraction of Light (Page No- 219) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Question 5: A ray of light travelling in water emerges into air. Draw a ray-diagram indicating the change in its path.

Solution : A ray of light travelling through water to air.

Solutions of Refraction of Light (Page No- 219) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Question 6: A ray of light travelling in air is incident on a parallel-sided glass slab (or rectangular glass slab). Draw a ray-diagram indicating the change in its path in glass.

Solution : A ray of light incidence on parallel sided glass slab.

Solutions of Refraction of Light (Page No- 219) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Question 7: A ray of light travelling in glass emerges into air. State whether it will bend towards the normal or away from the normal.

Solution : The ray of light will bend away from the normal.

Question 8: A ray of light travelling in air enters obliquely into water. Does the ray of light bend towards the normal or away from the normal ? Why ?

Solution : The ray of light bends towards the normal. This is because water is an optically denser medium than air.

Question 9: A ray of light goes from water into air. Will it bend towards the normal or away from the normal ?

Solution : It will bend away from the normal.

Question 10: State two effects caused by the refraction of light.

Solution : Two effects caused by refraction of light are:
– a pool of water appears to be less deep than it actually is.
– an object placed under water appears to be raised.

Question 11: Name the phenomenon due to which a swimming pool appears less deep than it really is.

Solution : This is due to refraction of light.

Question 12: When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence ?

Solution : Angle of refraction is less than the angle of incidence.

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