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Ashok0210
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Light incident normally on a plane mirror attached to a galvanometer coil retraces backwards as shown in Figure. A current in the coil produces a deflection of 3.5° of the mirror. What is the displacement of the reflected spot of light on a screen placed 1.5 m away?

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.37 NCERT Solutions for Class 12 Physics Chapter 9 Question-37

2020-2021cbse and up boardclass 12 chapter-9 physicsclass 12 physicsncert class 12 ray optics and optical instruments
Ashok0210
Asked: In:
A Cassegrain telescope uses two mirrors as shown in Figure.9.33 Such a telescope is built with the mirrors 20 mm apart. If the radius of curvature of the large mirror is 220 mm and the small mirror is 140 mm, where will the final image of an object at infinity be?

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.36 NCERT Solutions for Class 12 Physics Chapter 9 Question-36

2020-2021cbse and up boardclass 12 chapter-9 physicsclass 12 physicsncert class 12 ray optics and optical instruments
Ashok0210
Asked: In:
(a) For the telescope described in Exercise 9.34 (a), what is the separation between the objective lens and the eyepiece? (b) If this telescope is used to view a 100 m tall tower 3 km away, what is the height of the image of the tower formed by the objective lens? (c) What is the height of the final image of the tower if it is formed at 25 cm?

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.34 NCERT Solutions for Class 12 Physics Chapter 9 Question-34

2020-2021cbse and up boardclass 12 chapter-9 physicsclass 12 physicsncert class 12 ray optics and optical instruments
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