Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days


Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number


Mon to Sat - 11 AM to 8 PM

1.does the current in an AC circuit lags,leads remains in phase with the voltage of frequency (f) applied to the circuit, when 
(i)f=fr   (ii)f<fr   (iii) f>fr,where fr is the resonant frequency?
2.what happens to the focal length of lens when it is immersed in water?

Asked by Karishma 7th March 2015, 10:33 PM
Answered by Expert
2. When a convex lens is immersed in water there will be an increase in focal length and this is because the refractive index of glass with respect to water is less than the refractive index of glass with respect to air.
Note: Kindly ask the other question as a separate query.
Answered by Expert 7th March 2015, 11:53 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp