Question

The cost
C, in £, of a monthly phone contract is made up of the fixed line rental
L, in £, and the price
P, in £ ,of the calls made. Enter a formula for the cost and, enter the cost if the line rental is £15 and the price of calls made is £12.

Answer 1

In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as ; (a)- both assertion (A) and reason (R) true and reason (R) is the correct explanation of assertion (A). (b)-both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).(C)-assertion(A) is true but reason (R) is false. (d)-assertion (A) is false but reason (R) is true. Q- |. Assertion ( A) ; if the rays are diverging after emerging from a lens; the lens must be concave. Reason ( R) ; the convex lens can give diverging rays. Q-||. Assertion (A); refractive index of glass with respect to air is different for red light and violet light. Reason (R); refractive index of a pair of media depends on the wavelength of light used. correct options for Q-| and Q-|| are