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In internal focussing telescope, the additional concave lens inside the short tube can be moved between the object lens and diaphragm by means of . . . . . . . . arrangement.

In internal focussing telescope, the additional concave lens inside the short tube can be moved between the object lens and diaphragm by means of . . . . . . . . arrangement. Correct Answer Rock and pinion

Related Questions

The introduction of additional concave lens inside telescope results is reduction of . . . . . . . . of the image formed by the object lens.
A concave lens provided in telescope between the object lens and eye piece to eliminate the additive constant (f + d) from the Tachernetric distance equation is known as an . . . . . . . . lens.
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 Which of the following statements is/are true of the human eye lens? Choose the correct answer from the code given below:  (i) It is a convex lens (ii) It is a concave lens (iii) It is a convex lens of variable focal length (iv) It forms a real and inverted image of a distant object at the retina
Arrange the following activities with regard to rehabilitation in industries.
1. Assessment of feasibility
2. Assessment of additional funds
3. Preparation of cash flow statements
4. Arrangement of funds with other creditors
5. Marketing arrangement
6. Arrangement for disposal of unwanted assets and recovery of over due debts
7. Arrangement with various financial institutions
8. Arrangement fir Management Performance
Match the following (a) Concave mirror (i) A diverging lens (b) Concave lens (ii) Magnifying glass (c) Convex mirror (iii) Dentist mirror (d) Convex lens (iv) Rear view mirror
In an internal focussing type of telescope, the lens provided is
Which statement is correct about telescope: a) The focal length of the objective lens is more than the eyepiece. b) The focal length of the eyepiece is more than the objective lens. c) The aperture of the objective lens is more than the eyepiece. d) The aperture of the eyepiece is more than the objective lens.
In diaphragm pump the piston assembly is replaced by a diaphragm and housing; these pumps are often powered by ________ and occur as double diaphragm pumps.