The focal lengths of the objective and eyepiece of a telescope are 60 cm and 5 cm respectively. Find as magnifying power (P) for normal adjustment and when the image forms at near point.

The focal lengths of the objective and the eyepiece of the telescope are 225 cm and 5 cm respectively. The magnifying power of the telescope will be

The focal length of objective and eye-piece of astronomical telescope are 2 m and 5 cm respectively. The magnifying power of telescope when final image is formed at infinity is

The focal lengths of the objective and the eyepiece of an astronomical telescope are 140 cm and 5 cm respectively. (ii) When the telescope is in normal adjustment (i.e the final image is formed at infinity ), the magnifying power of the telescope will be

The focal lengths of the objective and the eyepiece of an astronomical telescope are 140 cm and 5 cm respectively. (iii) When the telescope is in normal adjustment , the separation between the objective and the eyepiece will be