Q1. A force has no effect on a) Mass
b) Density
of the body on which it is applied.
c) Weight
d) State
Q2. A force has
a) Magnitude
b) Direction
c) Both
d) None of these
Q3. When two equal forces act on a body but in the opposite direction, the net force on the body
is
b) Zero
c) Constant
d) Equal
a) One
Q4. The
a) Mass
of a body is the force which the earth pulls the body.
b) Weight
c) Height
d) None of these
Q5. When a force is applied to a body at rest, it begins to
a) Move
b) Stay at rest c) Break apart
d) None of these
Q6. In a magnet the like poles
a) Attract b) Falls
c) Spins
d) Repel
Q7. When a body does not change its position with respect to its surroundings, it is said to be at
a) Motion
b) Rest
c) Flying
d) Spinning

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.