Which of the following optical elements used alone can produce a real image of an object?
A. Negative lens
B. Plane mirror
C. Convex mirror
D. Concave mirror
E. Prism
Answer: D
Physics & Space Science
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a. True b. False Indicate whether the statement is true or false
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If the magnetic fields are very strong, such as around sunspots, how are spectral lines affected by the Zeeman effect?
What will be an ideal response?
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An ordinary light bulb consumes 60 W of power. Through what height could a 1000-N object be lifted expending the same amount of power for 6 hours?
A) 1300 m B) 360 m C) 720 m D) 650 m E) 430 m
Physics & Space Science
The expression(s) indicating the number of protons in a nucleus is
a. A. b. N. c. Z. d. Z + N. e. A – Z.
Physics & Space Science