[A] Light is least scattered. All we know that the Sun is directly over the head and sunlight travel relatively shorter distance causing only little of the blue and violet colours to be scattered.
[A] Light is least scattered.
All we know that the Sun is directly over the head and sunlight travel relatively shorter distance causing only little of the blue and violet colours to be scattered.
[B] Refraction of light by different layers of varying refractive indices We must know that air have different layers which act as varying refractive indices and when light enters by different layers of the apparent position of source of light keeps on changing. It happens due to refraction of lightRead more
[B] Refraction of light by different layers of varying refractive indices
We must know that air have different layers which act as varying refractive indices and when light enters by different layers of the apparent position of source of light keeps on changing. It happens due to refraction of light. So, stars appear to twinkle.
[B] Scattering of light Red colour scatters the least so that it travels the farthest. During sunset or sunrise, light has to travel a longer distance to reach us. The sky appears reddish as when only red light reaches to us. Hence, you should go with the option [B].
[B] Scattering of light
Red colour scatters the least so that it travels the farthest. During sunset or sunrise, light has to travel a longer distance to reach us. The sky appears reddish as when only red light reaches to us. Hence, you should go with the option [B].
At noon the sun appears white as
[A] Light is least scattered. All we know that the Sun is directly over the head and sunlight travel relatively shorter distance causing only little of the blue and violet colours to be scattered.
[A] Light is least scattered.
See lessAll we know that the Sun is directly over the head and sunlight travel relatively shorter distance causing only little of the blue and violet colours to be scattered.
Twinkling of stars is due to atmospheric
[B] Refraction of light by different layers of varying refractive indices We must know that air have different layers which act as varying refractive indices and when light enters by different layers of the apparent position of source of light keeps on changing. It happens due to refraction of lightRead more
[B] Refraction of light by different layers of varying refractive indices
See lessWe must know that air have different layers which act as varying refractive indices and when light enters by different layers of the apparent position of source of light keeps on changing. It happens due to refraction of light. So, stars appear to twinkle.
Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?
[B] Scattering of light Red colour scatters the least so that it travels the farthest. During sunset or sunrise, light has to travel a longer distance to reach us. The sky appears reddish as when only red light reaches to us. Hence, you should go with the option [B].
[B] Scattering of light
See lessRed colour scatters the least so that it travels the farthest. During sunset or sunrise, light has to travel a longer distance to reach us. The sky appears reddish as when only red light reaches to us. Hence, you should go with the option [B].
Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents ?
[D] Steel We know that steel is an alloy of iron and carbon. Mixing of carbon gives strength to iron. Your answer will be option [D].
[D] Steel
See lessWe know that steel is an alloy of iron and carbon. Mixing of carbon gives strength to iron. Your answer will be option [D].
Animal cell lacking nuclei would also lack in
[A] chromosomes Animal cells lacking nuclei would also lack in chromosomes because chromosomes are present in nucleus only.
[A] chromosomes
See lessAnimal cells lacking nuclei would also lack in chromosomes because chromosomes are present in nucleus only.