+91-87964 74404
FlagBACK
Question icon
Grade 12Wave Optics

A lens is cut through the centre (a) along the axis (b) transverse to axis.What will be change in focal length and aperture in two cases?

Profile image of Ritz
8 Years agoGrade 12
Answers icon

1 Answer

Profile image of Arun
ApprovedApproved Tutor Answer8 Years ago
Dear student
 
If lens is cut along the principal axis then there will be no change in the focal length of lens. but it is cut perpendicular to principal axis, then focal length will be twice the original one.
 
Regards
Arun (askIITians forum expert)

Other Related Questions on wave optics

question mark

what is meant by refractive index?

wave optics
1 Answer Available

Last Activity: 9 Months ago

question mark
An oscillator consists of a block of mass 512 g connected to a spring. When set into oscillation with amplitude 34.7 cm, it is observed to repeat its motion every 0.484 s. Find (a) the period, (b) the frequency, (c) the angular frequency, (d) the force constant, (e) the maximum speed, and ( f ) the maximum force exerted on the block.
wave optics
1 Answer Available

Last Activity: 4 Years ago

question mark
A PLANE TRANSMISSION GRATING HAS 45000 LINES. DETERMINE ITS RESOLVING POWER IN THE SECOND ORDER FOR WAVELENGTH OF 5000A.
 
wave optics
1 Answer Available

Last Activity: 4 Years ago

question mark
A PLANE TRANSMISSION GRATING HAS 45000 LINES. DETERMINE ITS RESOLVING POWER IN THE SECOND ORDER FOR WAVELENGTH OF 5000A.
wave optics
1 Answer Available

Last Activity: 4 Years ago

question mark
If V-numer of a multi mode fiber is 3. Calculate the no.of modes if it is step index and graded index fiber multimode fiber (rounded off)?
wave optics
1 Answer Available

Last Activity: 4 Years ago