If the rotation is in clockwise direction, it is called dextro rotatory (d-) (or) (+) and in the anticlockwise, laevo rotatory `(l-) (or ) (-)`

If the recemic mixture of a carboxylic acid is treated with a dextro rotatory amino acid then the products formed are

A vector A makes on angle 30° with the y-axis in anticlockwise direction. Another vector B makes on angle 30° with the x-axis in clockwise direction. Find angle between yectors A and B.

Which of the following statemetns are NOT the functions of the commutator in a D . C Motor ? a) To reverse the direction of the flow of current in the coil at every half rotation. b) To reverse the voltage in the coil at every half rotation. c) to enable the coil to be in electrical contact with the carbon brushes.

A 100 turn closely wound circular coil of radius 10 cm carries a current of 3.2.A. (a) What is the field at the centre of the coil ? (b) What is the magnetic moment of this coil ? The coil is placed in vertical plane and is free to rotate about a horizontal axis which coincides with its diameter. A uniform magnetic field of 2T in the horizontal direction exists such that initially the axis of the coil is in the direction of the field. The coil rotates through an anlge of 90^(@) under the influence of the magnetic field. (c) What are the magnitudes of the torques on the coil in the initial and final position ? (d) What is the angular speed acquired by the coil when it has rotated by 90^(@) ? The moment of inertia of the coil is 0.1 kg m^(2)

If the axes are rotated through an angle 45^(0) in the anti-clockwise direction, the coordinates of (sqrt(2), - sqrt(2)) in the new system are

If the lines represented by x ^(2) - 2hxy - y ^(2) =0 are rotated about (0,0) through an angle alpha one in clockwise direaction and the other in the counter clockwise direction, then the combined equation of the bisectors of the angle between the lines thus obtained is

If the lines represented by the equation 3y^2-x^2+2sqrt3x-3=0 are rotated about the point (sqrt3,0) through an angle of 15^@ , one is clockwise direction and other in anticlokwise direction so that they become perpendicualr, then equation of the pair of lines in the new possition is

D-glucose means dextro rotatory glucose . Is is true? Why ?