(b) red and green colours
Color is detected and differentiated by cone cells. Color is perceived by three types of cones. Long wavelength light (yellow and red) is detected by the L-cone, medium wavelength light (green) is detected by the M-cone, and short wavelength light (blue) is detected by the S-cone (blue). Individuals with normal vision use all three types of light cones correctly and can differentiate between different colours. Color blindness results from the absence, non-functioning, or malfunctioning of any of these cone cells. Reduced sensitivity to red and green light results in red-green colour blindness. The affected person cannot distinguish between reds, greens, and blues depending on the brightness and saturation of the colours.
A person suffering from color blindness cannot recognise
(A)Red and yellow colours
(B) red and green colours
(C) blue and green colours
(D) none of these
(A)Red and yellow colours
(B) red and green colours
(C) blue and green colours
(D) none of these
A person suffering from color blindness cannot recognise
(A)Red and yellow colours
(B) red and green colours
(C) blue and green colours
(D) none of these
(A)Red and yellow colours
(B) red and green colours
(C) blue and green colours
(D) none of these
.
)
west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be 
Specify the direction and magnitude of the earth’s field at the location.At a certain location in Africa, a compass points 
and 
carrying currents of 
and 
in the same direction are separated by a distance of 
. Estimate the force on a 
section of wire A.
wire carrying a current of 
is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 
. What is the magnetic force on the wire?
and making an angle of 
with the direction of a uniform magnetic field of 
. What is the magnitude of the field 
at a point 
from the wire?
-turns carrying current 
.
is at distance 
from the wire. Find the force acting on the electron if its velocity is directed towards the wire.