In the given figure, `lfloor1` and `lfloor2` are supplementary angels. If `lfloor1` is decreased, what changes should take place in `lfloor2` so that both the angles still remain supplimentary.

In the adjoining figure: Is lfloor1 adjacent to lfloor2 .

In the adjoining figure: Is lfloor1 vertically opposite to lfloor4 ?

In the adjacent figure, a line n falls on lines 1 and m such that the sum of the interior angles 1 and 2 is less than 180°, then what can you say about lines 1 and m.

What should be added to x^(4)-1 so that it is exactly divisible by 2x^(2)+2x+1

In the adjoining figure: What is vertically opposite angle of lfloor5

For the circuit shown here, would the balancing length increse, decrease or remain the same, if (i) R_(1) is decreased: (ii) R _(2) is increased , without any other change, (in each case) in the rest of the circuit. Justify your answers in each case.

In a double-slit experiment the angular width of a fringe is found to be 0.2^(@) on a screen placed 1 m away. The wavelength of light used is 600 nm. What will be the angular width of the fringe if the entire experimental apparatus is immersed in water? Take refractive index of water to be 4/3.

A square metal wire loop of side 0.10 m and resistance 1 Omega is moved at a constant velocity nu_0 in a uniform magnetic field of induction B=2 Wb m^(-2) as shown in the figure . The magnetic field lines are bot to the plane of the loop directed into the paper. The loop is connected to a network of resistors each of value 3 Omega . The resistance of lead wires OS and PQ are negligible . what should be the speed nu_0 of the loop so as to have a steady current of 1mA in the loop ? Also indicate the direction of current in the loop .