Phys 1102 Lab - Final Exam UPDATED ACTUAL QUESTIONS AND CORRECT
ANSWERS
angle of incidence is defined as the angle between ray of incidence (10)
____________ and normal
what are 2 differences b/t a concave and convex mirror? the focal length of a concave mirror is always positive and convex is always
negative.
concave reflecting surface is bulged inwards while convex is bulged outwards.
(10)
when a ray of light passes from a denser medium to a away (10)
rarer medium it bends______ from the normal
The partially dipped section of a stick that lies inside refraction (10)
water appears to be bent. This is due to ________________
A ray of light passing from water (n=1.33) to air (n=1) 48.75 deg (10)
comes out at such that the angle of refraction is 90 deg.
What is the angle of incidence?
For a convex lens, dº and d¡ were found to be +30 cm and 20 cm (10)
+60 cm respectively. Calculate the focal length of the
lens.
an image is said to have a magnification of 2. what does it m= Hi/Ho = Di/Do
say about the size of the image compared to the size of the size of the image is larger than the size of the object 2x
the object? (10)
, define bound charge the charge accumulated on the neutral object close to the inducing charge (1)
define free charge the charge present on the other side of the bound charge (1)
why are the bound charge and free charge located because the charges are being separated or repelled from each other (1)
located on the opposite sides?
during "charging by contact", we say that the inducing the charges must be equal (1)
charge cancels the bound charge after contact. What can
you infer about the number of inducing charge and
bound charge for this to happen?
if I were to drop a negative test charge on the top of one towards (1)
of the black arrows in figure 3 (a) lab 1, the charge will
move _________ from the center
if I were to drop a negative test charge on the top of one away (1)
of the black arrows in figure 3 (b) lab 1, the charge will
move ________ from the center.
define electric force the attraction or repulsion b/t any 2 charged objects (2)
define electric field a region around a charged particle or object w/in which a force would be exerted
on other charged particles/objects (2)
what is the expression for electric field strength at E = F/q = kq/r^2
distance r from a static charge Q? give answer in terms of (2)
k, Q, and r.
consider a static point charge q in space. Derive absolute V = kq/r
potential at the distance r from the charge. (2)
what is the amount of work done in moving a unit of W=0J
positive charge along an equipotential surface? (2)
electric field is a (scalar/vector) quantity, and electric electric field = vector (force = vector)
potential is a (scalar/vector) quantity. electric potential = scalar
(2)
The capacitance of a parallel plate capacitor increases (3)
(increases/decreases) with the increase in area of the
plates.
the capacitance of a parallel plate capacitor decreases (3)
(increases/decreases) with increase in the distance b/t
plates.
how does the charged stored in a capacitor change it increases (3)
when the input voltage is increased?
ANSWERS
angle of incidence is defined as the angle between ray of incidence (10)
____________ and normal
what are 2 differences b/t a concave and convex mirror? the focal length of a concave mirror is always positive and convex is always
negative.
concave reflecting surface is bulged inwards while convex is bulged outwards.
(10)
when a ray of light passes from a denser medium to a away (10)
rarer medium it bends______ from the normal
The partially dipped section of a stick that lies inside refraction (10)
water appears to be bent. This is due to ________________
A ray of light passing from water (n=1.33) to air (n=1) 48.75 deg (10)
comes out at such that the angle of refraction is 90 deg.
What is the angle of incidence?
For a convex lens, dº and d¡ were found to be +30 cm and 20 cm (10)
+60 cm respectively. Calculate the focal length of the
lens.
an image is said to have a magnification of 2. what does it m= Hi/Ho = Di/Do
say about the size of the image compared to the size of the size of the image is larger than the size of the object 2x
the object? (10)
, define bound charge the charge accumulated on the neutral object close to the inducing charge (1)
define free charge the charge present on the other side of the bound charge (1)
why are the bound charge and free charge located because the charges are being separated or repelled from each other (1)
located on the opposite sides?
during "charging by contact", we say that the inducing the charges must be equal (1)
charge cancels the bound charge after contact. What can
you infer about the number of inducing charge and
bound charge for this to happen?
if I were to drop a negative test charge on the top of one towards (1)
of the black arrows in figure 3 (a) lab 1, the charge will
move _________ from the center
if I were to drop a negative test charge on the top of one away (1)
of the black arrows in figure 3 (b) lab 1, the charge will
move ________ from the center.
define electric force the attraction or repulsion b/t any 2 charged objects (2)
define electric field a region around a charged particle or object w/in which a force would be exerted
on other charged particles/objects (2)
what is the expression for electric field strength at E = F/q = kq/r^2
distance r from a static charge Q? give answer in terms of (2)
k, Q, and r.
consider a static point charge q in space. Derive absolute V = kq/r
potential at the distance r from the charge. (2)
what is the amount of work done in moving a unit of W=0J
positive charge along an equipotential surface? (2)
electric field is a (scalar/vector) quantity, and electric electric field = vector (force = vector)
potential is a (scalar/vector) quantity. electric potential = scalar
(2)
The capacitance of a parallel plate capacitor increases (3)
(increases/decreases) with the increase in area of the
plates.
the capacitance of a parallel plate capacitor decreases (3)
(increases/decreases) with increase in the distance b/t
plates.
how does the charged stored in a capacitor change it increases (3)
when the input voltage is increased?
