The magnetic field inside an instrument is B=( 3.0 i - 1.0 j) T where B represents the magnetic field vector and T stands for tesla, the unit of the magnetic field. Part A What is the magnitude of the magnetic field?

How many places are there to place our eyes for the 2 distorted images to appear real? O One O Two Infinitely many O three

Case 7: Consider the case of an object (draw yourself on the diagram, an arrow erect on the optical axis) located at d0 > 2F'. Draw the following rays in the figure: ray parallel to the optical axis, focal ray, central ray, draw the image of the arrow, indicate in the same figure from where to where di is (image-lens distance). Don't forget to put the direction on each ray, both the incident rays and the transmitted rays. Image characteristics for case 7: object located at d0 > 2F'. Choose the ones that apply: a) Virtual b) Real c) Inverted d) Increased e) No image is formed f) Equal size  g) Reduced h) Erect Case 10: Consider the case of an object (draw yourself on the diagram, an arrow erect on the optical axis) located within the focus F', that is do < F'. Draw the following rays in the figure: ray parallel to the optical axis, focal ray, central ray, draw the image of the arrow, indicate in the same figure from where to where di is (image-lens distance). Don't forget to…

The normal human eye has maximum visual acuity with a pupil size of about 3 mm. For larger pupils, acuity decreases due to increasing aberrations; for smaller pupils, acuity decreases due to increasing effects of diffraction. Ifyour pupil diameter is 2.0 mm, as it would be in fairly bright light, what is the smallest diameter circle that you can barely see as a circle, rather than just a dot, if the circle is at your near point, 25 cm from your eye? Assume the light’s wavelength in air is 600 nm and the index of refraction inside theeye is 1.33.