Physics
An object has an angular size of 0.0140 rad when placed at the near point (20.0 cm) of an eye. When the eye views this object using a magnifying glass, the largest possible angular size of the image is 0.0490 rad. What is the focal length of the magnifying glass?
asked by
Orla

Don't be at that craic now Orla, you just need to Trappe yourself in the library a bit more often
posted by Neil
Respond to this Question
Similar Questions

Physics
The near point of a naked eye is 32 cm. When an object is placed at the near point and viewed by the naked eye, it has an angular size of 0.068 rad. A magnifying glass has a focal length of 15 cm, and is held next to the eye. The 
PHYSICS help!!!!! =)
An object is rotating with an angular momentum 4.00 kg m2/s while being acted on by a constant torque 3.00 Nm. What is the angular speed of precession of the angular velocity of the object? A.1.33 rad/s. B.0.750 rad/s. C.12.0 
physics
When you hold an insect at the near point of your eye it subtends an angle of 5.00 x 10^3 rad. Determine the angular size (magnitude only) of the insect when viewed through a microscope that has an angular magnification with a 
PHYsics HELP
When you hold an insect at the near point of your eye it subtends an angle of 5.00 103 rad. Determine the angular size (magnitude only) of the insect when viewed through a microscope that has an angular magnification with a 
physics
When you hold an insect at the near point of your eye it subtends an angle of 5.00 103 rad. Determine the angular size (magnitude only) of the insect when viewed through a microscope that has an angular magnification with a 
Physics
At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration of –0.40 rad/s^2 has an angular velocity of 1.5 rad/s and an angular position of 2.3 rad. What is the angular position of the wheel at t = 2.0 s? 
Physics  angular acceleration
An object rotates about a fixed axis, and th angular position of a reference line on the object is given by THETA(t)=0.4e^2t, where THETA is in radians, and t is in seconds. [a.] what is the object's angular acceleration at t = 2 
Physics
At t = 0, a wheel rotating about a fixed axis at a constant angular deceleration of 0.37 rad/s2 has an angular velocity of 0.5 rad/s and an angular position of 8.5 rad. What is the angular position of the wheel after 2 s? Answer 
physics
a wheel revolves about a fixed horizontal axis through O. During a certain interval of time, the angular velocity (which initially is 20 rad per second clockwise) changes uniformly at such a rate that the angular displacement is 
Physics 1 (Calc Based)
At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration of –0.40 rad/s^2 has an angular velocity of 1.5 rad/s and an angular position of 2.3 rad. What is the angular position of the wheel at t = 2.0 s?