Final image produced by a compound microscope is_____________?

Related Mcqs:

1. The minimum distance between an object and its real image in a convex lens is_____________?

   A. 2 f
   B. 2.5 f
   C. 3f
   D. 4f

2. Image of an object 5 mm high is only 1 cm high. Magnification produced by lens is__________________?

   A. 0.5
   B. 0.2
   C. 1
   D. 2

3. In an electron microscope, we use energetic particles because of______________?

   A. Penetrating power is high
   B. Kinetic energy is large
   C. Wavelength is very short
   D. All the above reasons

4. In the electron microscope, electric & magnetic fields are used as_______________?

   A. Electromagnetic gun
   B. Source of electromagnetic waves
   C. Deflecting charged particle
   D. Converging source of electrons

5. Radiation produced from TV picture tube is_____________?

   A. B-rays
   B. X-rays
   C. Far infrared
   D. Infrared

6. If an object is placed away from 2f of a converging lens then the image will be_______________?

   A. real and erect
   B. virtual and erect
   C. real and inverted
   D. virtual

7. A convex lens gives a virtual image only when the objects lies_________________?

   A. between principal focus and center of curvature
   B. beyond 2 f
   C. at the principal focus
   D. between principal focus and optical center

8. A three-dimensional image is obtained by________________?

   A. Electron microscope
   B. Scanning electron microscope
   C. Magnetic imaging
   D. None of the above

9. A person wears spectates with concave lenses. It means that normally (when not using glasses), the image of distant objects is focused in his eyes:

   A. behind the retina
   B. in front of the retina
   C. on the retina
   D. on the blind spot

   Submitted by: Abid Hussain

10. Magnification of the astronomical telescope is_____________?

    A. fo+fe
    B. fo/fe
    C. fe/fo
    D. (1+fo/fe)L/fo