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Two converging lenses having power of +2.0 and +20.0 diopter are used to give magnifications in an astronomical telescope.
calculate the angular magnification of the telescope when
(I).in normal adjustment.
(ii).The final image is formed at the least distance of distinct vision (25cm).
Smoking causes blood vessels to constrict. If the average blood vessel radius of a smoker decreases 1.6% Calculate the needed percent increase in pressure
One end of a nylon rope is tied to a stationary support at the top of a vertical mine shaft 80.0 m deep. Find the speed of a transverse wave on the rope
illustrate what is the magnitude of the acceleration of the box and hanging mass.
A toy car of mass 1.0 kg is stationary, and a child rolls a toy truck of mass 4.7 kg straight toward it with a speed of 3.2 m/s. What is the velocity of the center of mass of the system consisting of the two toys
A laser that emits pulses of UV lasting 3.65 ns has a beam diameter of 1.60 mm. What is the maximum electric field strength in this pulse
A 15-cm-long metal rod pulled along two frictionless, conducting rails at a constant speed of 3.5 m/s. What is the current induced in the rod
Find the position of an object in front of a screen to obtain an image of size twice larger than its original size on the screen.
The current increases from 20 mA to 60 mA in a 25 mH inductor over 30 s. What is the induced emf across the inductor
A gas cylinder with a tight-fitting, movable piston contains 200 cm3 of air at 1.0 atm. What is the volume of gas at this depth
The G string of a guitar which should be 397 Hz is playing flat at 380 Hz. What percentage change in the tension of the wire is necessary so as to tune the string to 392 Hz.
A uniform block of granite in the shape of a book has face dimensions of 23.0 centimeter and 23.6 centimeter and a thickness of 1.97 centimeter. Obtain its rotational kinetic energy about that axis
A 0.69 cm high object generates an image that is 0.8 cm high. The lens has a focal length of 7 cm, Find the image and object distances
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