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گیارہویں جماعت · طبیعیات · 5 سوالات

نام: ____________________ تاریخ: ____________

The magnifying power of a simple microscope for a near point of 25 cm and focal length 5 cm is (image at the near point):
- A 5
- B 25
- C 30
- D 6
A telescope's magnifying power (normal adjustment) is:
- A f objective x f eyepiece
- B f objective - f eyepiece
- C f eyepiece / f objective
- D f objective / f eyepiece
The human eye forms its image on the:
- A Cornea
- B Pupil
- C Retina
- D Iris
Short sight is corrected with a:
- A Concave lens
- B Plane mirror
- C Convex lens
- D Prism
In an optical fibre, light travels by:
- A Diffraction
- B Refraction only
- C Total internal reflection
- D Dispersion

جوابی کلید

1. D, 2. D, 3. C, 4. A, 5. C