In normal adjustment, for a refracting telescope, the distance between objective and eye piece is 30 cm. The focal length of the objective, when the angular magnification of the telescope is 2, will be:
Text Solution
Verified by ExpertsThe correct answer is:
A
So 
f 0 = 20 cm
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
A light wave travelling linearly in a medium of dielectric constant 4, incident on the horizontal i…
The difference of speed of light in the two media A and B (v A – v B ) is 2.6 x 10 7 m/s. If the re…
A light whose electric field vectors arc completely removed by using a good Polaroid, allowed to in…
Consider a light ray travelling in air is incident into a medium of refractive index . The inciden…
A convex lens has power P. It is cut into two halves along its principal axis. Further one piece (o…
The refracting angle of a prism is A and refractive index of the material of the prism is cot (A/2)…