अम्ल, क्षार एवं लवण - L5 | pH Scale | Chapter 2 | कक्षा 10 NCERT विज्ञान | Nishtha Ma'am

Class 10 Science (Hindi) | Chapter 2 | अम्ल, क्षार तथा लवण | Important Questions | Quick Revision

A galvanometer having a reisstance 12Omega gives a full scale deflection for a current f 2.5mA . It is converted into a voltmeter of range 10V , what is the net resistasnce of the galvanometer?

At 20^(@)C a liquid is filled upto 10 cm height in a container of glass of length 20 cm and cross-sectional area 100 cm^(2) . Scale is marked on the surface of container. This scale gives correct reading at 20^(@)C . Given gamma_(L) = 5 xx 10 ^(-5) k^(-1) , alpha^(g) = 1 xx 10^(-5) "^(@)C^(-1) The actual height of liquid at 40^(@)C is -