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Gives out visible as when the strike it, this coating .
rays .
V = lambda
V / lambda = f
3 x 10 ^ 8 / x 10 ^ -7
f = x 10^ 14 Hz
iii) Satellites cover a area.
Speed = Time
= 3.0 x 10 ^ 8 x
= x 10 ^ 7 m ( final answer )
ii) , yellow
Description of use : For heating in .
Description of use :
ii) Different indices.
iii) or N m^ 2
t = s
t = 1.5 x 10 ^ 8
x 10 ^ 5
t = s ( final answer )
1000 = m /
mass = kg
= 780 x x 1.5
Work done =
iii) P = T
= 11700 / 60 x 60
Power = W ( final answer ).
P – rays
Q – rays
R –
rays, , infrared wave .
V = lambda
F = 3 x 10 ^ 8 / x 10 ^ -7
frequency = x 10 ^ 14 Hz ( final answer )
iii) No of signals cover areas .
= sin 57 / sin r
angle of refraction = degree
iii) frequency : no
Speed:
Wavelength :
Wavelength:
1. light is omitted
2. sound does not need to be as it is not e.m
3. violet is missing .
Attract .
iii) energy to energy
Component P :
Component Q : rays
3.f = 1 /
= 1 / 2.7 x 10 ^ -3
frequency = Hz ( final answer )
ii) amplitude shown .
period shown.