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Answer:
A) Increases by a factor of 2
Explanation:
Kinetic energy can be defined as an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
Where;
K.E represents kinetic energy measured in Joules.
M represents mass measured in kilograms.
V represents velocity measured in metres per seconds square.
Given that mass, m = 2m
Substituting into the equation, we have;
K.E = ½mv²
K.E = ½*2mv²
Cross-multiplying, we have;
2K.E = 2mv²
Hence, if the mass of an object increases by a factor 2, kinetic energy is increased by a factor of 2.
Answer:
momentum = 1.147 × kg-m/s
Explanation:
given data
wavelength = 575 nm = 575 × m
slit width S = 0.036 mm = 0.036 × m
diffraction pattern D = 4.2 m
to find out
width of central bright fringe, angle of 3rd dark fringe and momentum of photon
solution
we will apply here formula for central bright fringe width formula that is
width = ...............1
put here all these value
width =
width = 0.134 m
so width of central bright fringe is 0.134 m
and
for angle we will formula
slit width × sin∅ = n × wavelength ............2
here n is no of dark fringe
put here value and find angle
0.036 × × sin∅ = 3 × 575 ×
solve and we get
∅ = 2.75°
so angle to the 3rd dark fringe is 2.75°
and
momentum formula is
momentum =
here we know planck constant for photon is 6.6 ×
so
momentum =
momentum = 1.147 × kg-m/s