A__________is a quantum of electromagnetic energy that carries an amount of energy that depends inversely on its wavelength.
A) wave
B) photon
C) grating
D) fringe
Question 2The magnifying power of a telescope with a primary lens of focal length 1 m and an eye piece of 0.5 m focal length is _____.
A) 2
B) 5
C) 8
D) 10
Question 3The energy of a photon:
A) is inversely proportional to the frequency of the light.
B) is inversely proportional to the wavelength of the light.
C) depends only on the speed of the light.
D) depends only on the mass of the photon.
Question 4What is the ratio of the light-gathering power of a telescope with a primary lens of diameter 10 m to a telescope with a primary lens of diameter 1 m?
A) 10 to 1
B) 1 to 10
C) 100 to 1
D) 1 to 100
Question 5Which telescope has the largest light-gathering power among the following telescopes?
A) A telescope of diameter 5 cm and focal length 50 cm
B) A telescope of diameter 6 cm and focal length 100 cm
C) A telescope of diameter 2 cm and focal length 100 cm
D) A telescope of diameter 3 cm and focal length 75 cm
Question 6A telescope that suffers from chromatic aberration and has a low light-gathering power is most likely a:
A) small diameter reflecting telescope.
B) small diameter refracting telescope.
C) large diameter refracting telescope.
D) large diameter reflecting telescope.
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