Answer:
Magnification m is 2.5cm
Explanation:
This problem bothers on lenses
Given data
Object distance u= 4cm
Height of object v= 10 cm
The problem is quite straightforward seeing that object and image distances are given
We know that the magnification
m= size of image/size of object
m= v/u= 10/4 = 2. 5cm
What is a convex lens
A convex lens is a type of lens that has the centre thicker than the ends, the thickness at the centre makes the lens surface to curve outward. Convex lens causes close light rays of light to converge at a point after refraction.
Answer:
diameter of transmission is 3.473 mm
Explanation:
given data
current = 300 A
total wire length = 1.0 m
voltage drop = 0.55 V
solution
as here Resistivity of copper is = 1.68 × ohm- m
so we get here resistance of wire that is
resistance = ..............1
R =
R = 1.774 × ohm
and now we get diameter of wire that is
R = .............2
d² = ...............3
put here value
d² =
d =
d = 3.473 × m
d = 3.473 mm
so diameter of transmission is 3.473 mm
Answer:
The uncertainty in the volume of the sphere is
Solution:
As per the question:
Measured radius of the sphere, R = 135.4 m
Uncertainty in the radius,
We know the volume of the sphere is:
We know that the fractional error for the given sphere is given by:
where
= uncertainty in volume of sphere
Now,
Now, substituting the suitable values:
Answer:
Explanation:
Answer D. Interaction between a pen and paper while you write
The answer is D, the amount of energy stays the same.