Answers When light passes through two media x and y of refraction indices 1.51 and 1.33… When light passes through two media x and y of refraction indices 1.51 and 1.33 respectively, the speed… Read More
Answers I. Moon. II. Sun. III.street light. IV. stars. Which of these above is a natural… I. Moon. II. Sun. III.street light. IV. stars. Which of these above is a natural source of light?… Read More
Answers Musical instruments playing the same note can be distinguished from one another owing to the… Musical instruments playing the same note can be distinguished from one another owing to the differences in their… Read More
Answers An object is placed 5 cm from the pole of a concave mirror. if the… An object is placed 5 cm from the pole of a concave mirror. if the focal length of… Read More
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Answers A man standing 2 m from a charcoal fire is warmed mainly by A man standing 2 m from a charcoal fire is warmed mainly by A. convection B. radiation C.… Read More
Answers Metal cables are used as telephone wires because Metal cables are used as telephone wires because A. they are cheap B. they are sourced locally C.… Read More
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Answers It is observed that water will wet a clean glass because the It is observed that water will wet a clean glass because the A. cohesion of water to glass… Read More
Answers An electric heater rated 220v, 1000 w is immersed into a bucket full of water,… An electric heater rated 220v, 1000 w is immersed into a bucket full of water, calculate the mass… Read More