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Question

In a new system, unit of mass is 10kg, unit of length is 5m and unit of time is 10s. Then in the new system 5N is equal to :


A
5 new units
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B
10 new units
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C
15 new units
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D
20 new units
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Solution

The correct option is D 10 new units
Force $$= M^{1}L^{1}T^{-2}$$

$$f_{1}=5\dfrac{kg m}{s^{2}}$$

$$f_{2}=\dfrac{10 kg\times 5 mt}{10^{2}}$$

$$\dfrac{f_{1}}{f_{2}}=\dfrac{5}{\dfrac{10\times 5}{10^{2}}}=10$$ new units

Physics

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