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1. Use a ray diagram to show the image of an object 30 cm away from a convex lens with focal length 12cm. Describe the image fully and give the magnification/reduction.
2. A concave lens has a focal length of 8cm. Draw a ray diagram to show the formation of an image. Describe the image fully and give the magnification/reduction.
3. A convex lens with a focal length of 5cm is used as a magnifying glass. An ant is placed 3cm from the lens. Draw a ray diagram to show that the image is virtual, upright and magnified. Find the position of the image and the magnification.
4. A camera lens has focal length 55mm and an object is 500mm away. a) Calculate the position of the image and the magnification (or reduction). b) Why is no image formed if the object is placed at the focal point? c) At what distance from an object must the camera lens be placed if the image isi to be the same size as the object?
5. Explain how different mirror geometries can form both real and virtual images.
A jogger generates heat energy at a rate of 808.2 W. If all this energy is removed by sweating, how much water must evaporate from the jogger's skin each hour
Determine what mass of tree sap could be raised from 18°C to its boiling point and then evaporated by this energy
Jane plans to fly from Binghampton, New York, to Springfield, Massachusetts, about 280 km due east of Binghampton, What was the wind velocity
One way to decrease your use of fossil fuels is to heat your water via solar radiation. A solar water heater runs cold water through dark, radiation absorbing tubing.
you need to prepare a 0.151-mm-diameter tungsten wire with a resistance of 2.83 k? how long must the wire be? the
What voltage will your voltmeter read across the second capacitor after repeating the charge sharing process three times? Express the answer with one decimal place
Monochromatic light falls on two very narrow slits 0.045 mm apart. Successive fringes on a screen 5.00 m away are 6.2 cm apart near the center of the pattern. estimate the frequency of the light
A beetle 4.80mm is examined with magnifier of focal length 10.3 cm. what is the apparent length of the beetle
A 30 gram bullet initially traveling at 500 m/s penetrates 12 cm into a wooden block. Use Work Energy theorem and find the average force it exerts on the wooden block
A viscous fluid flows in a 0.10-m-diameter pipe such that itsvelocity measured 0.012 m away from the pipe wall is 0.8 m/s. If the flow is laminar, determine the centerline velocity and the volumetric flow rate.
How fast is the light beam moving along the wall when the beam makes angles of 0 = 45°, B = 60°, and B = 85° with the line perpendicular from the light to the wall?
A shopper in a supermarket pushes a cart with a force of 35 Newton directed at an angle of 25 degree below the horizontal. Calculate the work done by the shopper as she moves down a 50.0 meter length aisle
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