Two slits are illuminated with green light ( = 540 nm). The slits are 0.05 mm apart and the distance to the screen is 1.5 m. At what distance (in mm) from the central maximum on the screen is the average intensity 50 of the intensity of the central maximum?
a. 1
b. 3
c. 2
d. 4
e. 0.4
[Ques. 2] Which of the following is(are) found mainly between Mars and Jupiter?
a. Asteroids
b. Meteoroids
c. Comets
d. Interplanetary dust
[Ques. 3] A system of a proton and a neutron has a net charge of
a. +1.6 10-19 C.
b. 1.6 10-19 C.
c. 3.2 10-19 C.
d. zero.
[Ques. 4] Two slits separated by 0.050 mm are illuminated with green light ( = 540 nm). How many bands of bright lines are there between the central maximum and the 12-cm position? (The distance between the double slits and the screen is 1.0 m.)
a. 1111
b. 111
c. 11
d. 1
e. 11111
[Ques. 5] The asteroid belt is between the orbits of
a. Earth and Mars.
b. Mars and Jupiter.
c. Earth and Venus.
d. Jupiter and Saturn.
[Ques. 6] A system of an electron and a neutron has a net charge of
a. +1.6 10-19 C.
b. 1.6 10-19 C.
c. 3.2 10-19 C.
d. zero.
[Ques. 7] Two slits separated by 0.10 mm are illuminated with green light ( = 540 nm). Calculate the distance (in cm) from the central bright-region to the fifth bright band if the screen is 1.0 m away.
a. 2.3
b. 2.5
c. 2.7
d. 2.1
e. 2.0
[Ques. 8] Which planet has a large moon with retrograde motion?
a. Jupiter
b. Saturn
c. Uranus
d. Neptune
[Ques. 9] A system of 18 electrons and 11 neutrons has a net charge of
a. 28.8 10-19 C.
b. 28.8 10-19 C.
c. 11.2 10-19 C.
d. 18.0 10-19 C.
e. 11.2 10-19 C.
[Ques. 10] For small angle approximations
a. the angle must be 10 or less
b. the angle must be 10 radians or less
c. the angle must be 1 or less
d. the angle must be 1 radian or less
e. the angle must be 45 or less
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