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High School/JEE/NEET/IPhO Physics | 17-19 Yrs

Basic Tools

Mechanics

Heat & Thermodynamics

Oscillation & Waves

Properties of Matter

Gravitation

Electrostatics

Magnetic Effects

Optics

Modern Physics

Semiconductors

Communication Systems

sir why did u take negative sign for velocity of river

3 years ago by

Why net velocity is root of Vs square-Vf square not root of Vs square+Vf square?please explain

8 years ago by Arnab Pradhan

Ans 1 ->

apply pythagoras theorem in vector triangle and you get your answer

7 years ago by Paresh Chaudhari

Ans 2 ->

sir plz explain I cant understand.

6 years ago by Shashank Sudhir Dikkar

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