Reflection by Spherical mirror, science, PYQs RRBNTPC By-Akanksha ma'am
36:46
lenses (concave/convex) PYQs, science, RRB NTPC exam preparation By-Akanksha ma'am
40:25
जलडमरूमध्य, विश्व की प्रमुख झील एवं जलप्रपात, विश्व के प्रमुख पर्वत एवं पठार, PYQs, by Amit sir
30:26
Electric current, science, PYQs RRBNTPC By-Akanksha ma'am
23:11
Refraction of light,PYQs, science, RRB NTPC exam By-Akanksha ma'am
20:46
Human eye, Optical instruments, Dispersion of light, PYQs RRBNTPC By-Akanksha ma'am
29:09
Waves, PYQs, RRB NTPC/JE/ALP/RPF/Group D By Akanksha ma'am
26:26
Electricity, electric charge,science, PYQs RRBNTPC By-Akanksha ma'am
19:46