Home › CBSE Class 12 (Science) › Physics › Ray Optics and Optical Instruments › The geometric centre of a spherical lens is call…
The geometric centre of a spherical lens is called its
AThe mirror pole
BOptical centre
CCentre of curvature
DPrincipal focus
Answer & Solution
Correct answer: B. Optical centre
For a lens the geometric centre is the optical centre, while the same point on a mirror is its pole.
Related questions
A prismatic corner reflector turns incoming light back along its path using how many totalIn a wiper rain sensor, water drops do what to the infrared beam?Which device uses the critical angle to measure the refractive index of a substance?Which prism pair is commonly used to turn the view upright in binoculars?At the critical angle, the refracted ray travels in which direction?A swimmer looking up from below calm water sees the outside world compressed into a cone. Optical fibres carry signals over long distances by which principle?Diamond has a refractive index of about 2.42. Roughly what is its critical angle in air?