Being small and lightweight is the biggest advantage of Tejas MK1 for the role it has to perform
Tejas has smallest RCS, smaller than any 4th gen fighter jet in the world it's hard to spot from naked eye in WVR combat because of it's small size it's sneaky little fighter jet has a powerful Indian made Gallium Arsenide AESA radar (UTTAM MK2) with 992 TR module the weight carrying capacity and number of hard points is is also the best for it's size , it has a thrust to weight ratio of 1.07
I have read about this little fighter jet it's indeed the best in it's category.
It's smaller and lighter than Mig21 Bison maintenance cost is low and less time consuming body is made up of carbon composite making it strong light weight and maintenance free look at this picture size comparison of Tejas and Su30MKI
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Looks compact , modern and sturdy like a Hornet