Measurement In Science and Technology — Important Questions
NIOS · Class 10 · Science & Tech
53 important questions from Measurement In Science and Technology for NIOS Class 10 Science & Tech, with answers. Written for the board exams 2027.
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Important Questions from Measurement In Science and Technology
A square field has side 250 m. What is its area in m^2 and then in km^2?
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62,500 m^2 = 0.0625 km^2
Area = 250 × 250 = 62,500 m^2. Since 1 km^2 = 10^6 m^2, 62,500 m^2 = 62,500 / 10^6 = 0.0625 km^2.
A wall is 3.5 m long and 120 cm high. What is its area in m^2?
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4.2 m^2
Convert 120 cm = 1.2 m. Then area = 3.5 × 1.2 = 4.2 m^2.
A car travels 150 km in 3 h. What is its average speed in km h^-1 and in m s^-1?
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50 km h^-1 and 13.9 m s^-1
Average speed = 150 / 3 = 50 km h^-1. For m s^-1, 50 × 1000 / 3600 = 13.9 m s^-1.
A body of mass 8 kg accelerates from rest to 20 m s^-1 in 5 s. What force acts on it?
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32 N
Acceleration = change in velocity / time = 20 / 5 = 4 m s^-2. Force = mass × acceleration = 8 × 4 = 32 N.
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