State how to draw the three rays for finding the image position due to a curved mirror
What will be an ideal response?
Ray 1 leaves the top of the object and is drawn such that it is parallel to the axis; therefore after reflection it must pass along a line through the focal point.
Ray 2 leaves the top of the object and is made to pass through the focal point; therefore it must reflect so it is parallel to the axis.
Ray 3 leaves the top of the object and is made to pass through the center of curvature; therefore it must reflect back on itself.
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Hydrocarbons containing carbon-carbon double bonds are
a. alkenes. b. cycloalkanes. c. alkynes. d. alkanes. e. ketones.
Atomic Nucleus: An yttrium isotope has 39 protons and 50 neutrons in its nucleus. Which one of the following symbols accurately represents this isotope?
A. 
Y
B. 
Y
C. 
Y
D. 
Y
E. 
Y
How and why would the noon Sun appear different to an observer on Mercury compared to one on Earth?
What will be an ideal response?
Which of the following statements is true?
a. A hot object contains a lot of heat. b. A cold object contains only a little heat. c. Objects do not contain heat. d. Statements a and b are true.