Answer:
'Incident rays that are parallel to the central axis are sent through a point on the near side of the mirror'.
Explanation:
The question is incomplete, find the complete question in the comment section.
Concave mirrors is an example of a curved mirror. The outer surface of a concave mirror is always coated. On the concave mirror, we have what is called the central axis or principal axis which is a line cutting through the center of the mirror. The points located on this axis are the Pole, the principal focus and the centre of curvature. <em>The focus point is close to the curved mirror than the centre of curvature.</em>
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During the formation of images, one of the incident rays (rays striking the plane surface) coming from the object and parallel to the principal axis, converges at the focus point after reflection because all incident rays striking the surface are meant to reflect out. <em>All incident light striking the surface all converges at a point on the central axis known as the focus.</em>
Based on the explanation above, it can be concluded that 'Incident rays that are parallel to the central axis are sent through a point on the near side of the mirror'.
Answer: 0.0036
Explanation:
Initial moles of = 2 mole
Moles of at equilibrium= 0.25 mole
Volume of container = 10 L
Initial concentration of
equilibrium concentration of
The given balanced equilibrium reaction is,
Initial conc. 0.2 M 0 0
At eqm. conc. (0.2-x) M xM xM
The expression for equilibrium constant for this reaction will be,
We are given : x = 0.025 M
Now put all the given values in this expression, we get :
Thus the value of the equilibrium constant is 0.0036.
Answer:
l = 0.548 m
Explanation:
For this exercise we compensate by finding the speed of the car
p = m v
v = p / m
v = 0.58 / 0.2
v = 2.9 m / s
this is how fast you get to the ramp, let's use conservation of energy
starting point. Lowest point
Em₀ = K = ½ m v²
final point. Point where it stops on the ramp
= U = m g h
mechanical energy is conserved
Em₀ = Em_{f}
½ m v² = m g h
h =
let's calculate
h =
h = 0.0858 m
to find the distance that e travels on the ramp let's use trigonometry, we look for the angle
tan θ = y / x
tan θ = 12/75 = 0.16
θ = tan⁻¹ 0.16
θ = 9º
therefore
sin 9 = h / l
l = h / sin 9
l = 0.0858 / sin 9
l = 0.548 m
Answer:
Explanation:
Let the potential difference remains same. So, by insertion the dielectric, the capacitance
C' = KCo
As V remain same, so Q' = KQo
Energy, U' = 1/2 C'V² = KCo
Electric field, E' = E/ K
Where, k be the dielectric constant.
Thus, V remains same
Energy increases
C increases
E decreases
Q increases.
Answer:
C.Supersaturated
Explanation:
There are three types of solution:
<u>SATURATED SOLUTION</u>:
It is the solution that contains maximum amount of solute dissolved in a solution in normal conditions.
<u>UNSATURATED SOLUTION</u>:
It is the solution that contains less than the maximum amount of solute dissolved in a solution in normal conditions. It has space for more solute to be dissolved in it.
<u>SUPERSATURATED SOLUTION:</u>
It contains more than the maximum amount of solute dissolved in it. Such a solution has no capacity to dissolve any more solute under any conditions.
Since the sugar is no more dissolving in the tea and has settled down. Therefore, the solution is:
<u>C.Supersaturated</u>