The _____ is the largest natural source of light?

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1. The natural source of hydrocarbon is:___________?

   A. Crude oil B. Biomass C. Coal D. Carbohydrates Submitted by: Fahad Mehsud...

2. What are the primary colors of Light?

   A. White, Black, Blue B. Red, Yellow, Blue C. Red, Orange, Blue D. Red, Green, Blue...

3. A light year is a unit of ?

   A. Time B. Energy C. distance D. Mass...

4. Moon light reaches to earth in___________seconds?

   A. 0.3 seconds B. 1.3 seconds C. 2.3 seconds D. 3.3 seconds Submitted by: Adv Imtiaz Ali...

5. Which one of the following wavelengths of light is most effective in photosynthesis?

   A. Blue B. Green C. Orange D. Yellow Submitted by: Malik Asghar Hussain...

6. The light rays used for eliminating bacteria?

   A. X-rays B. infrared rays C. microwave radiation D. ultra-violet radiation Submitted by: Malik Asghar Hussain...

7. Which colour of light is deviated least ________.

   A. Red B. Blue C. Violet D. Green Submitted by: Yousuf Sanjrani...

8. If the green leaves are placed under red light, their color will become________?

   A. Green B. Black C. Red D. Blue Submitted by: Syed Rameez ul Hassan...

9. Tyndall effect is related to the ______ of light?

   A. Reflection B. Dispersion C. Scattering D. Refraction Submitted by: Malik Asghar Hussain...

10. Which of the following phenomena of light are involved in the formation of a rainbow?

    A. Refraction B. Dispersion C. Total internal reflection D. All of the above Submitted by: Safdar Abbas...