arrow
arrow
arrow
The focus of a concave mirror is at a distance of 16" " cm from its pole. Its centre of curvature will be at a distance of ______ from the pole.
Question

The focus of a concave mirror is at a distance of 16" " cm from its pole. Its centre of curvature will be at a distance of ______ from the pole.

A.

16" " cm

B.

24" " cm

C.

8" " cm

D.

32" " cm

Correct option is D

Given
f = 16 cm 
 R is the radius of curvature (distance of the center of curvature from the pole), and
is the focal length 
For a concave mirror, the focus (F) is at half the distance of the center of curvature (C) from the pole (P).
Formula  used: 
The relationship is given by:
R = 2 f
Solution: 
we can calculate: R = 2×\times 16 = 32  ans.

Information Booster: 
  • Concave mirror:A Concave mirror is a spherical mirror with the reflective surface curved inward ( like the inside of a sphere). It is also concave mirror.
  • Focus of a concave mirror: The focus of a concave mirror of trr is a point on the principle axis where parallel rays of  light, after reflection from the mirror, converge.
  • Center of Curvature of a Concave mirror:The center of curvature (C) is the center of the sphere of which the concave mirror is a part. It is a position on the principal axis located at a equal to the radius of curvature (R) from the pole (P).

Free Tests

Free
Must Attempt

CBT-1 Full Mock Test 1

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
Free
Must Attempt

RRB NTPC Graduate Level PYP (Held on 5 Jun 2025 S1)

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
Free
Must Attempt

CBT-1 General Awareness Section Test 1

languageIcon English
  • pdpQsnIcon40 Questions
  • pdpsheetsIcon30 Marks
  • timerIcon25 Mins
languageIcon English

Similar Questions

test-prime-package

Access ‘RRB Group D’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
354k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow