Lens-Maker Formula: As part of a piece of optical apparatus to be used in air, you need to design a thin lens having faces with radii of curvature of magnitude 24 cm each. When an object 32 mm tall is placed 30 cm from this lens, it must form a real image 60 cm from the lens.(a) What must be the index of refraction of the lens material?(b) What is the height of the image of the object? Is it upright or inverted; is it real or virtual?
What will be an ideal response?
(a) 1.6 (b) 64 mm, inverted, real
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Fill in the blank(s) with correct word
In a perfectly ELASTIC collision between two perfectly rigid objects
A) the momentum of each object is conserved. B) the kinetic energy of each object is conserved. C) the momentum of the system is conserved but the kinetic energy of the system is not conserved. D) both the momentum and the kinetic energy of the system are conserved. E) the kinetic energy of the system is conserved, but the momentum of the system is not conserved.
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A) oceanic—oceanic boundaries B) oceanic—convergent boundaries C) continental—continental convergent boundaries
Which of the following processes will increase the mass of the system?
A) A rock is made to move faster and faster. B) Two magnets that are initially held together by their magnetic forces are separated. C) Both of the above. D) A cup of coffee is heated. E) All of the above.