A) ,d VsLVj ftlesa ,yÃMh dk ç;ksx fd;k tkrk gS\
B) ,d VsLVj ftlesa ,d pqEcdh; fnDlwpd ¼Magnetic compass½ dk mi;ksx fd;k tkrk gS
C) ,d VsLVj ftlesa ,d mPp okV rkiu rarq ¼Heating filament½ dk ç;ksx fd;k tkrk gS
D) ,d VsLVj ftlesa de okV ds cYc dk mi;ksx fd;k tkrk gS
Correct Answer:
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