We see the sun 8 1 4 minutes after it has actually risen. Why?

The distance from the sun to the earth is 1485 lakhs kilometres. Since there is such a huge difference in the distance it takes hardly 8 1 4 minutes for the sunlight to reach the earth. That is why we see the sun 8 1 4 minutes after it has actually risen.

EASY

Earn 100

What is an optical object?

Important Questions on Light

MEDIUM

Science>Physics>Light>Reflection of Light

Why is the ratio of the velocities of light of wavelengths

4000 Å & 8000 Å

in vacuum

1 : 1

? Which of the above wavelengths has a higher frequency?

EASY

Science>Physics>Light>Reflection of Light

What do you understand by monochromatic light and polychromatic light?

EASY

Science>Physics>Light>Reflection of Light

We see the sun

8 \frac{1}{4}

minutes after it has actually risen. Why?

MEDIUM

Science>Physics>Light>Reflection of Light

The distance of the Sun from the Earth may be said to be about _____ light minutes.

EASY

Science>Physics>Light>Reflection of Light

What is meant by rectilinear propagation of light?

MEDIUM

Science>Physics>Light>Reflection of Light

Rohan has set an apparatus for the experiment of rectilinear propagation of light in which, he has vertically arranged three coloured cardboard in a straight line with a hole at a random position in each and a burning candle at another end. What is wrong in this apparatus?

EASY

Science>Physics>Light>Reflection of Light

The sun and _____ are luminous objects.

(Choose from the options: moon/bulb/paper)

EASY

Science>Physics>Light>Reflection of Light

Light can travel through a bent tube just like water can. True or false?

MEDIUM

Science>Physics>Light>Reflection of Light

How will you prove that light travels in a straight line?

EASY

Science>Physics>Light>Reflection of Light