In making an alloy, a substance of specific gravity s₁ and mass m₁ is mixed with another substance of specific gravity s2 and mass m2; then the specific gravity of the alloy is

Question:

15.In making an alloy, a substance of specific gravity s₁ and mass m₁ is mixed with another substance of specific gravity s2 and mass m2; then the specific gravity of the alloy is

Options :

a) ((m1 + m2)/(s1 + s2))
b) ((s1s2)/(m1 + m2))
c) (m1 +m2)/((m1 + m2)/(s1 + s2))
d) ((m1 + m2)/(s1 + s2))/(m1 + m2)

Answer :

c) (m1 +m2)/((m1 + m2)/(s1 + s2))

Answer Steps :

Solution :-

Step1 :-

Step2 :-

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If current in an electric bulb changes by 1%, then the power will change by (a) 1%(b) 2%1000 OF(c) 4% anda darse(d) =%2

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