What is the refractive power of a magnifying glass

Reference no: EM13664570

A stamp collector is viewing a stamp by a magnifying glass held next to her eye. Her near point is 25 cm from her eye.

1. What is the refractive power of a magnifying glass that has an angular magnification of 6.0 when the image of the stamp is located at the near point?

2. What is the angular magnification when the image of the stamp is 41 cm from the eye?

Reference no: EM13664570

Questions Cloud

Axle decide the acceleration of the masses ma and mb : An at wood machine consists of 2 masses Ma and Mb, which are linked by an inelastic cord of negligible mass that passes over a pulley. if the pulley has radius Ro and moment of inertia I about its axle decide the acceleration of the masses Ma and Mb ..

A sample contains radioactive atoms of two types : A sample contains radioactive atoms of two types, A and B. Initially there are three times as many A atoms as there are B atoms. Two hours later, the numbers of the two atoms are equal. The half-life of A is 0.72 hours. What is the half-life of B?

Some temperature at which mercury will totally fill beaker : A Pyrex beaker that has a capacity of 1000cm3 at 20!C contains 990cm3 of mercury at that temperature. Is there some temperature at which the mercury will totally fill the beaker? Justify your answer (i.e., show this mathematically). Suppose that no m..

Two rectangular blocks are stacked on a table : Two rectangular blocks are stacked on a table. The lower block has a mass of 38.6 kg and upper block has a mass of 3.40 kg. The coefficient of kinetic friction among the lower block and the table is 0.260. The coefficient of static friction among the..

What is the refractive power of a magnifying glass : A stamp collector is viewing a stamp by a magnifying glass held next to her eye. Her near point is 25 cm from her eye. What is the refractive power of a magnifying glass that has an angular magnification of 6.0 when the image of the stamp is located ..

What is real elevation angle of the sun above the horizon : An underwater scuba diver sees the Sun at an apparent angle of 48.0° above the horizon. What is the real elevation angle of the Sun above the horizon?

How many years would it take to cross the milky way : The Milky Way has a diameter (proper length) of about 1.2×105 light-years. According to an astronaut, how many years would it take to cross the Milky Way if the speed of the spacecraft is 0.890 c?

Headlights on a certain car are gauged : The headlights on a certain car are gauged to be 1.1 m apart. The diameter of the pupil in a human eye is 2.5 mm. What is the FURTHEST DISTANCE at which a human eye could clearly see the headlights as 2 separate lights? Utilize a wavelength of 617 nm..

A laser utilized in eye surgery emits : A laser utilized in eye surgery emits a 3.44 mJ pulse in1.19 ns, focused to a spot 31.5 um in diameter on the retina. Compute (in SI units) the power per unit area at the retina.(This quantity is called the irradiance.)

User Account

All Pages