When white light is passed through a prism, it splits into ___ colors.
A. 5
B. 6
C. 7
D. 8
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Which from the following is NOT a conductor?
A. Aluminium
B. Silicon
C. Graphite
D. All are conductors
A camera uses a _____ to form an image.
A. convex lens
B. concave lens
C. condenser lens
D. none of these
Which from the following is true for “Sound”?
A. Sound cannot travel through a vaccum
B. Sound cannot travel through gases
C. Sound cannot travel through liquids
D. Sound cannot travel through solids
Each day human body breathe in ___ litres of air.
A. 5,000 to 10,000
B. 10,000 to 15,000
C. 15,000 to 20,000
D. 20,000 to 25,000
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