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GAURAB DASH from St Mary's convent school, Baripada
Subject :NSO    Class : Class 6

In the given figure, which of the following switches need to be closed to change electrical energy to sound energy only?


AP, Q and R
BP, R and T
CP, Q, R and T
DP, Q, S and T


Ans 1:

VIJAYA SREYAS B from NARAYANA OLYMPIAD SCHOOL KUKATPALLY, HYDERABAD
Class : Class 6
P,R,T. By closing these switches and none of the other open ones, one wire is connected to the filament no 1 of the bulb but 2 to the doorbell. This gives only sound energy.

Ans 2:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
B

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