A magnifying glass with focal length 15 cm is placed 10 cm above a stamp. The image of the stamp is located 30 cm above the magnifying glass
a. True
b. False
Indicate whether the statement is true or false
False
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Monochromatic light is incident on a diffraction grating that is 75 mm wide and ruled with 50,000 lines. The second-order maximum is seen at 32.5°. What is the wavelength of the incident light?
A) 202 nm B) 403 nm C) 605 nm D) 806 nm
If the mass of a cart is quickly loaded to have twice the mass while a propelling force remains constant, the cart's acceleration
A) quadruples. B) doubles. C) stays the same. D) halves. E) none of these
When salt is introduced to ice, the temperature at which melting occurs is
A) quite unaffected. B) lowered. C) increased. D) dependent on the shape of salt and ice crystals
An electron is carried from the positive terminal to the negative terminal of a 9 V battery. How much work is required in carrying this electron?
A) 1.6 × 10-19 J B) 17 × 10-19 J C) 9 J D) 14.4 × 10-19 J E) 14.4 × 10-19 J/C