a monochromatic beam  of light of wave length 6000A⁰ in vacuum enters a medium of refractive index 1.5 in d medium wat is d frequency  

a concave mirror forms a real image on a screen of thrice d linear dimension of d object & screen r moved until image is twice d size of d object is 5cm find d shift of d screen & d focal length of d mirror

d normality of 0.3M phosphorous  acid (H₃PO₃) is

a)0.1               b)0.9

b)0.3               d)0.6a)6.023x10²³                 b) 

how many moles of electron weigh 1kg

c)           d)

d distance of point of intersection of d lines of d lines

x-4/1=y+3/-4=z+1/7&

x-1/2=y+1/-3=z+10/8 frm (1,-4,7)

a very long straight conductor &an isoceles triangular  conductor lie in a plane & seperated frm each other as shown in d figure given a=10cm b=20cm & h=10cm d coefficent of mutual  induction is [diameter of d wire crosssection d=1mm & resistivity of d wire =1.810^-8mss]

h.c. verma page no: 53  q.no; 43