The Time taken for sunlight to reach the Earth is___________?
The Time taken for sunlight to reach the Earth is___________?
A. 700 sec
B. 8hrs 20 mins
C. 8 mins 20 sec
D. 8 mins
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The distance between the optical centre of a convex lens and its principal focus is called its_______?
The distance between the optical centre of a convex lens and its principal focus is called its_______?A. Focal Length
B. Radius of Curvature
C. Power
D. MagnificationThe distance between the optical centre and principal focus of a lens is called focal length. Focal length of a lens depends on the refractive index of the glass and its curvature.
What are the primary colors of Light?
What are the primary colors of Light?A. White, Black, Blue
B. Red, Yellow, Blue
C. Red, Orange, Blue
D. Red, Green, Blue
What are the primary colors of Pigment?
A. White, Black, Blue
B. Red, Yellow, Blue
C. Red, Orange, Blue
D. Red, Green, Blue
The gases used in different types of welding would include:__________?
The gases used in different types of welding would include:__________?A. oxygen and hydrogen
B. oxygen, hydrogen, acetylene and nitrogen
C. oxygen, acetylene and argon
D. oxygen and acetyleneThe dominant phase of life cycle in these organism is haploid?
The dominant phase of life cycle in these organism is haploid?A. Mosses
B. Bacteria
C. Protozoa
D. NoneWhich one of the following gases is readily soluble in water at room temperature?
Which one of the following gases is readily soluble in water at room temperature?A. Chlorine
B. Nitrogen
C. Ammonia
D. Carbon dioxideThe average weight of man’s brain is 4.8 ounces. What is the average weight of woman’s brain ?
The average weight of man’s brain is 4.8 ounces. What is the average weight of woman’s brain ?A. 4.8 ounce
B. 5.8 ounce
C. 5.4 ounce
D. 4.4 ounce