Edzy
AI TutorResourcesToolsCompareBuy
SearchDownload AppLogin
Edzy

Edzy for Classes 6-12

Edzy is a personal AI tutor for CBSE and State Board students, with curriculum-aligned guidance, practice, revision, and study plans that adapt to each learner.

  • Email: always@edzy.ai
  • Phone: +91 96256 68472
  • WhatsApp: +91 96256 68472
  • Address: Sector 63, Gurgaon, Haryana

Follow Edzy

Browse by Class

  • CBSE Class 6
  • CBSE Class 7
  • CBSE Class 8
  • CBSE Class 9
  • CBSE Class 10
  • CBSE Class 11
  • CBSE Class 12
Explore the CBSE resource hub

Explore Edzy

  • Study Resources
  • Free Study Tools
  • Best Apps for Board Exams
  • Edzy vs ChatGPT
  • About Us
  • Why We Built Edzy
  • Blog
  • CBSE AI Tutor

Support & Legal

  • Help & FAQs
  • Accessibility
  • Privacy Policy
  • Terms & Conditions
  • Refund Policy
  • Cookie Policy
  • Site Directory

© 2026 Edzy. All rights reserved.

Curriculum-aligned learning paths for students in Classes 6-12.

LR
Question Practice

The radius of curvature of a concave mirror is 30 cm. What is the focal length?

Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.

MCQ_SA
CBSE
Class 10
Science
Science
Light – Reflection and Refraction
Question Bank

The radius of curvature of a c...

Single Answer MCQ
Q-00106606

The radius of curvature of a concave mirror is 30 cm. What is the focal length?

1

-15 cm

2

15 cm

3

-30 cm

4

30 cm

Previous QuestionNext Question

Video Explanation

Answer

Solution:

Watch Video Solution

Login to get access

Keep Practising

Students who asked this also explored

Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.

Q1.

What are the laws of refraction of light?

Single Answer MCQ
View explanation
Q2.

Define the refractive index of a medium.

Single Answer MCQ
View explanation
Q3.

How does the speed of light vary in different media?

Single Answer MCQ
View explanation
Q4.

Explain the concept of optical density in terms of refractive index.

Single Answer MCQ
View explanation