NCERT Solutions for class 10 Science chapter 10: Light- Reflection and Refraction

NCERT Solutions for Class 10 Science Chapter 10 Light – Reflection and Refraction are provided in this article. It comprises all the important definitions, concepts, and methodologies that will be really beneficial for the students. The important topics that are included in this chapter are:

Reflection of light by curved surfaces
Images formed by spherical mirrors
Refraction
Refractive index
Refraction of light by spherical lens

Expected no. of Questions: 2-3 questions of around 6 marks.

Download PDF: NCERT Solutions for Class 10 Science Chapter 10 Light – Reflection and Refraction

NCERT Solutions for Class 10 Science Chapter 10

Class 10 Science Chapter 10 Light – Reflection and Refraction: Important Topics

Reflection is the bouncing back of light when it strikes a smooth surface. Refraction is the bending of light rays when it travels from one medium to another. Nature Of Surface. Generally occurs on shinny surfaces that only allow rebounding of light without permitting penetration through it.

Laws of Reflection of Light

There are two laws of reflection of light, that are:

First Law of Reflection: According to this law, the reflected ray and the incidental ray all lie on the same plane.
Second Law of Reflection: This law states that the angle of reflection and the angle of the incident are always going to be equal.

Reflection of Light by Curved Surfaces

When the reflecting surface is instead curved, it is called a curved mirror. There are two types of curved mirrors; concave and convex mirrors. Concave mirrors are curved mirrors whose reflecting surfaces curve inwards while those whose reflecting surfaces bulge outwards are called convex mirrors. Curved mirrors generally form images when two rays intersect or appear to intersect.

Refractive Index

Refractive Index or Index of Refraction is a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density. The refractive index variable is most commonly represented by the letter n or n' in descriptive text and mathematical equations.

Chapter Related Links:

Refraction of Light	Reflection of Light	Lens Formula and Magnification
Light	Power of a Lens	Refraction and Refractive Index
Convex Mirror	Difference Between Concave and Convex Mirror	Plane Mirror

Science Study Guides:

Biology	Difference between in Biology
Biology MCQs	Class 10 Science Notes

CBSE X Related Questions

1.
When an element 'X' reacts with water, it starts floating. Identify the element 'X':

Potassium
Calcium
Sodium
Iron

View Solution

2.
From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively:
(i) Growth of pollen tube towards ovule.
(ii) Movement of sunflower towards sunlight.
(iii) Movement of root towards Earth/Gravity.
(iv) Movement of leaves due to breeze.

(i) and (iii) respectively
(iii) and (i) respectively
(i), (ii) and (iii), (iv) respectively
(i), (iii) and (ii), (iv) respectively

View Solution

3.
(i) \( \text{AgNO}_3 + \text{NaCl} \rightarrow \text{NaNO}_3 + \text{AgCl} \)
(ii) \( \text{K}_2\text{SO}_4 + \text{BaCl}_2 \rightarrow \text{BaSO}_4 + 2\text{KCl} \)
Which of the following options clearly describes both the reactions?

(i) is double displacement, (ii) is displacement reaction.
Both, (i) and (ii) are displacement reactions and precipitation reactions.
Both, (i) and (ii) are double displacement reactions and precipitation reactions.
(i) is displacement, (ii) is double displacement reaction.

View Solution

4.
Due to change in length and area of cross-section of a conductor, resistance of conductor changes while resistivity does not change. Why ?

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5.
When you look at an object very close to your eyes, the:

Ciliary muscles of your eye contract and the eye lens becomes thick.
Ciliary muscles of your eye get relaxed and the eye lens becomes thick.
Ciliary muscles of your eye contract and the eye lens becomes thin.
Ciliary muscles of your eye get relaxed and the eye lens becomes thin.

View Solution

6.
How many bulbs of resistance \( 8 \ \Omega \) each should be connected in parallel combination to draw a current of \( 2 \text{ A} \) from a battery of \( 4 \text{ V} \) ?

View Solution

NCERT Solutions for class 10 Science chapter 10: Light- Reflection and Refraction

NCERT Solutions for Class 10 Science Chapter 10

Class 10 Science Chapter 10 Light – Reflection and Refraction: Important Topics

Laws of Reflection of Light

Reflection of Light by Curved Surfaces

Refractive Index

CBSE X Related Questions

1.
When an element 'X' reacts with water, it starts floating. Identify the element 'X':

2.
From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively:
(i) Growth of pollen tube towards ovule.
(ii) Movement of sunflower towards sunlight.
(iii) Movement of root towards Earth/Gravity.
(iv) Movement of leaves due to breeze.

3.
(i) \( \text{AgNO}_3 + \text{NaCl} \rightarrow \text{NaNO}_3 + \text{AgCl} \)
(ii) \( \text{K}_2\text{SO}_4 + \text{BaCl}_2 \rightarrow \text{BaSO}_4 + 2\text{KCl} \)
Which of the following options clearly describes both the reactions?

4.
Due to change in length and area of cross-section of a conductor, resistance of conductor changes while resistivity does not change. Why ?

5.
When you look at an object very close to your eyes, the:

6.
How many bulbs of resistance \( 8 \ \Omega \) each should be connected in parallel combination to draw a current of \( 2 \text{ A} \) from a battery of \( 4 \text{ V} \) ?

Similar Science Concepts

Comments

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NCERT Solutions for class 10 Science chapter 10: Light- Reflection and Refraction

NCERT Solutions for Class 10 Science Chapter 10

Class 10 Science Chapter 10 Light – Reflection and Refraction: Important Topics

Laws of Reflection of Light

Reflection of Light by Curved Surfaces

Refractive Index

CBSE X Related Questions

1.When an element 'X' reacts with water, it starts floating. Identify the element 'X':

2.From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively: (i) Growth of pollen tube towards ovule. (ii) Movement of sunflower towards sunlight. (iii) Movement of root towards Earth/Gravity. (iv) Movement of leaves due to breeze.

3.(i) \( \text{AgNO}_3 + \text{NaCl} \rightarrow \text{NaNO}_3 + \text{AgCl} \) (ii) \( \text{K}_2\text{SO}_4 + \text{BaCl}_2 \rightarrow \text{BaSO}_4 + 2\text{KCl} \) Which of the following options clearly describes both the reactions?

4.Due to change in length and area of cross-section of a conductor, resistance of conductor changes while resistivity does not change. Why ?

5.When you look at an object very close to your eyes, the:

6.How many bulbs of resistance \( 8 \ \Omega \) each should be connected in parallel combination to draw a current of \( 2 \text{ A} \) from a battery of \( 4 \text{ V} \) ?

Similar Science Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
When an element 'X' reacts with water, it starts floating. Identify the element 'X':

2.
From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively:
(i) Growth of pollen tube towards ovule.
(ii) Movement of sunflower towards sunlight.
(iii) Movement of root towards Earth/Gravity.
(iv) Movement of leaves due to breeze.

3.
(i) \( \text{AgNO}_3 + \text{NaCl} \rightarrow \text{NaNO}_3 + \text{AgCl} \)
(ii) \( \text{K}_2\text{SO}_4 + \text{BaCl}_2 \rightarrow \text{BaSO}_4 + 2\text{KCl} \)
Which of the following options clearly describes both the reactions?

4.
Due to change in length and area of cross-section of a conductor, resistance of conductor changes while resistivity does not change. Why ?

5.
When you look at an object very close to your eyes, the:

6.
How many bulbs of resistance \( 8 \ \Omega \) each should be connected in parallel combination to draw a current of \( 2 \text{ A} \) from a battery of \( 4 \text{ V} \) ?