Two identical particles each having a charge of 10 µC are tied with two strings of equal length 1 m at a common point. If both the strings makes an angle of 30° with vertical, then mass of each particle will be :

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

0.5 kg

0.1 kg

0.15 kg

1 kg

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

$T \cos 30^{o} = mg and T \sin 30^{o} = \frac{{kq}^{2}}{l^{2}} \Rightarrow \tan 30^{o} = \frac{{kq}^{2}}{l^{2} mg} \Rightarrow m = \frac{{kq}^{2} \sqrt{3}}{l^{2} g} = 0.15 kg$

Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET