My Learning Cart
?
Categories
Account

If the radius of curvature of a spherical mirror is 30 cm, what is its focal len

₹0.0
Login to Download
  • 📥 Instant PDF Download
  • ♾ Lifetime Access
  • 🛡 Secure & Original Content

What’s inside this PDF?

Question: If the radius of curvature of a spherical mirror is 30 cm, what is its focal length?

Options:

  1. 10 cm
  2. 15 cm
  3. 20 cm
  4. 30 cm

Correct Answer: 15 cm

Solution: 

Focal length f = R/2 = 30 cm / 2 = 15 cm.

If the radius of curvature of a spherical mirror is 30 cm, what is its focal len

Practice Questions

Q1
If the radius of curvature of a spherical mirror is 30 cm, what is its focal length?
  1. 10 cm
  2. 15 cm
  3. 20 cm
  4. 30 cm

Questions & Step-by-Step Solutions

If the radius of curvature of a spherical mirror is 30 cm, what is its focal length?
  • Step 1: Understand that the radius of curvature (R) is the distance from the mirror's surface to its center of curvature.
  • Step 2: Know that the focal length (f) of a spherical mirror is related to the radius of curvature by the formula f = R / 2.
  • Step 3: Substitute the given radius of curvature (R = 30 cm) into the formula: f = 30 cm / 2.
  • Step 4: Calculate the focal length: f = 15 cm.
  • Focal Length of Spherical Mirrors – The focal length (f) of a spherical mirror is half of its radius of curvature (R), expressed as f = R/2.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely
Home Practice Performance eBooks