Examlex
A magnifying glass produces an angular magnification of 7. What is the focal length of this lens if a person whose near point is 28 cm reads a book using this magnifying glass?
Q2: Two satellites with equal rest masses of
Q17: An FM radio station broadcasts at 96.7
Q22: Consider a student whose mass is 70.
Q23: Light of wavelength 500 nm illuminates a
Q36: The distribution of energy in the blackbody
Q41: A beam of light with a frequency
Q54: A proton, moving freely, has a wavelength
Q58: What is the critical angle for light
Q71: Which one of the following is the
Q99: A wire carrying a 2-A current is