Daily Practice Questions (Part 4) - Light: Reflection And Refraction | Class 10 Physics
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📢 Full Playlist Link: Class 10 Physics (New Session 2023-24...
✅ In this video,
✔️ Class: 10th
✔️ Subject: Physics
✔️ Chapter: Light: Reflection And Refraction (Chapter 10)
✔️ Topic Name: Daily Practice Questions (Part 4) - Light: Reflection And Refraction | Class 10 Physics Chapter 10
✔️ Topics Covered In This Video (by Vibhuti Ma'am): This YouTube video tackles the topic of light, reflection and refraction which is the 10th chapter of Class 10 Physics. It provides daily practice questions to help the student understand the topic better. Led by experienced tutor and mentor Vibhuti Mam, the video explains the concepts with apt examples and diagrams. It will help the student strengthen their knowledge of the topic and enjoy an engaging learning experience.
===============================================
00:00 Introduction: Light: Reflection And Refraction
00:08 Question 1 to 5: Daily Practice Questions: Light: Reflection And Refraction
1. Radius of curvature of a concave mirror is 25 cm. What is its focal length?
38:22 Website Overview
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Points covered in this video:-
Daily Practice Questions -
1. Radius of curvature of a concave mirror is 25 cm. What is its focal length?
a. 11.5 cm
b. 12 cm
c. 12.5 cm
d. 13 cm
Solution 1. Here R = 25 cm,
f = ?
From
f = R/2
= 25/2
= 12.5 cm
2. An erect image 3 times the size of the object is obtained with a concave mirror of radius of curvature 36 cm. What is the position of the object?
a. -12 cm
b. +12 cm
c. -28 cm
d. -10 cm
Solution 2. Here,
m = 3
R = -36 cm
u = ?
As, m = -v/u
3 = -v/u
v = -3u
As 1/v + 1/u = 1/f = 2/R, 1/-3u + 1/u = 2/-36
Or, 3u = -36
u = -12 cm
3. A concave mirror produces a real image 10 mm tall, of an object 2.5 mm tall placed at 5 cm from the mirror. Calculate focal length of the mirror and the position of the image?
a. + 8 cm and 15 cm
b. - 4 cm and -20 cm
c. + 4 cm and +20 cm
d. - 6 cm and -15 cm
Solution 3. Here,
h2 = -10 mm, h1 = 2.5 mm, u = -5 cm
As, m = h2/h1 = -v/u
= -10/2.5 = -v/-5
v = -20 cm
Negative sign of v shows that image is real.
1/f = 1/v + 1/u
= 1/-20 - 1/5 = -20/5
f = - 4 cm
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#class10light #lightreflection #class10physics #class10science #magnetbrains
Disclaimer: "This video is for educational and informational purposes only and is not intended to infringe on any copyrights. If you believe that this video has used any copyrighted material in a way that constitutes copyright infringement, please contact us at [email protected] and we will take appropriate action."
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===============================================
📢 Full Playlist Link: Class 10 Physics (New Session 2023-24...
✅ In this video,
✔️ Class: 10th
✔️ Subject: Physics
✔️ Chapter: Light: Reflection And Refraction (Chapter 10)
✔️ Topic Name: Daily Practice Questions (Part 4) - Light: Reflection And Refraction | Class 10 Physics Chapter 10
✔️ Topics Covered In This Video (by Vibhuti Ma'am): This YouTube video tackles the topic of light, reflection and refraction which is the 10th chapter of Class 10 Physics. It provides daily practice questions to help the student understand the topic better. Led by experienced tutor and mentor Vibhuti Mam, the video explains the concepts with apt examples and diagrams. It will help the student strengthen their knowledge of the topic and enjoy an engaging learning experience.
===============================================
00:00 Introduction: Light: Reflection And Refraction
00:08 Question 1 to 5: Daily Practice Questions: Light: Reflection And Refraction
1. Radius of curvature of a concave mirror is 25 cm. What is its focal length?
38:22 Website Overview
===============================================
Why study from Magnet Brains?
Magnet Brains is an online education platform that helps give You NCERT/CBSE curriculum based free full courses from Kindergarten to Class 12th so that you can perform well in any and all exams you give in your academic career.
👉 Contact us 🤑🤑
➡️ Connect with us : [email protected]
➡️ Website : https://www.magnetbrains.com
➡️ Subscribe to us on YouTube: @magnetbrainseducation
➡️ Subscribe to Magnet Brains Hindi Medium : @magnetbrainshindimedium
➡️ Facebook : Facebook: Magnet-Brains-Education-110955641184512
➡️ Instagram : Instagram: magnetbrains
➡️ Telegram : https://t.me/magnetbrainsbhopal
Points covered in this video:-
Daily Practice Questions -
1. Radius of curvature of a concave mirror is 25 cm. What is its focal length?
a. 11.5 cm
b. 12 cm
c. 12.5 cm
d. 13 cm
Solution 1. Here R = 25 cm,
f = ?
From
f = R/2
= 25/2
= 12.5 cm
2. An erect image 3 times the size of the object is obtained with a concave mirror of radius of curvature 36 cm. What is the position of the object?
a. -12 cm
b. +12 cm
c. -28 cm
d. -10 cm
Solution 2. Here,
m = 3
R = -36 cm
u = ?
As, m = -v/u
3 = -v/u
v = -3u
As 1/v + 1/u = 1/f = 2/R, 1/-3u + 1/u = 2/-36
Or, 3u = -36
u = -12 cm
3. A concave mirror produces a real image 10 mm tall, of an object 2.5 mm tall placed at 5 cm from the mirror. Calculate focal length of the mirror and the position of the image?
a. + 8 cm and 15 cm
b. - 4 cm and -20 cm
c. + 4 cm and +20 cm
d. - 6 cm and -15 cm
Solution 3. Here,
h2 = -10 mm, h1 = 2.5 mm, u = -5 cm
As, m = h2/h1 = -v/u
= -10/2.5 = -v/-5
v = -20 cm
Negative sign of v shows that image is real.
1/f = 1/v + 1/u
= 1/-20 - 1/5 = -20/5
f = - 4 cm
light reflection and refraction class 10 important questions with answers
light reflection and refraction class 10 important questions with answers pdf
light reflection and refraction class 10 notes pdf download
class 10 physics chapter refraction of light
numericals of light reflection and refraction class 10th
sample paper of class 10 physics chapter light reflection and refraction
what is image formation class 10
image formation by concave mirror class 10
#class10light #lightreflection #class10physics #class10science #magnetbrains
Disclaimer: "This video is for educational and informational purposes only and is not intended to infringe on any copyrights. If you believe that this video has used any copyrighted material in a way that constitutes copyright infringement, please contact us at [email protected] and we will take appropriate action."
4 سال پیش
در تاریخ 1399/06/12 منتشر شده
است.
71,438
بـار بازدید شده