Answer:
Be sure you understand two optics principles: the focal length of a convex mirror is NEGATIVE (by convention) and R / 2 = f.
Find f, take its negative, plug in the mirror equation and obtain Di = - 24 cm. This indicates that the image is virtual (as it should be in a convex mirror), is erect (as all virtual images are), is diminished (as it should be) and INSIDE the mirror as it should be.
Explanation:
Answer:
C
Explanation:
Mantle convection is the very slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. The Earth's surface lithosphere rides atop the asthenosphere and the two form the components of the upper mantle.
Answer:
True.
Explanation:
The explicit culture include attitudes, practices, signs and legends of a society are basic features of culture. This includes the way people look, the kind of food they eat, music, dance, the amazing and/or ugly things they consider. SO, in an explicit organization culture organization members tend to make decisions that are consistent with the values embedded in that culture.
Answer:
a) The wavelength of light is 6×10^-7 m.
b) The size of the central peak is 6×10^-3 m.
Explanation:
let:
α be the distance between the 1st and 2nd maxima
d = 0.4 mm be the grating slit space
X be the distance to the screen
a) α = λ×X/d
λ = α×d/X
= (0.3×10^-2)×(0.4×10^-3)/(2)
= 6×10^-7 m
Therefore, the wavelength of light is 6×10^-7 m.
b) the size of the central peak is given by:
D = 2×λ×X/d
= 2×(6×10^-7)×(2)/(0.4×10^-3)
= 6×10^-3 m
Therefore, the size of the central peak is 6×10^-3 m.
Explanation:
It is given that,
Object distance, u = -3.75 cm (negative always)
Focal length, f = +4 cm
We need to find the angular magnification of the lens. Firstly, we will find the image distance using lens formula as :
v = -60 cm
Angular magnification is as the ratio of image distance to the object distance i.e.
m = +16
So, the angular magnification of the insect is 16. Hence, this is the required solution.
