The focal lengths of the objective lens and the eyepiece in a microscope are 2.90 mm and 2.50 cm, respectively. An object is placed 3.00 mm from the objective
The image of this object is viewed with the eyepiece adjusted for minimum eyestrain for persons with a near point of 25 cm. What is the distance between the objective and the eyepiece?
A) 9.9 cm
B) 9.0 cm
C) 15 cm
D) 11 cm
E) 13 cm
D
You might also like to view...
The condensation hypothesis proposes that the Moon formed when an object estimated to have been at least as large as Mars smashed into the proto-Earth
Indicate whether the statement is true or false
A main-sequence star is observed with a surface temperature of 3500 K and a luminosity 10?2 times that of the Sun. Based on the H-R diagram shown above, what is the approximate mass of this star?
A) 0.2 times that of the Sun B) 0.5 times that of the Sun C) 0.9 times that of the Sun D) 1.5 times that of the Sun
This figure shows Hubble's law. If a galaxy is observed to be moving away from us at 30,000 (3 104) km/s, approximately how far away is it? (Hint: Be sure to read the axis labels carefully.)
A) 30,000 light-years B) 1400 million light-years C) 3000 million light-years D) 1400 light-years
A train is traveling away from you at 120 km/h. It blows its whistle, and you hear a tone of 0.400 kHz. Take the speed of sound to be 340 m/s. What frequency does the whistle actually produce?
A) 444 Hz B) 439 Hz C) 364 Hz D) 361 Hz