PYQs Flashcards
1
Q
Why can’t two like charges attract?
A
Since charges have electric field and the electric field of positive charge points outward whereas electric field of negative charge points inward. Due to such difference unlike charges attract and more importantly like charges repel.
2
Q
Fractional change when coeff of expansion and volume are given is?
A
Gamma * dt
3
Q
Does mirror formula hold good for plane mirror?
A
Yes
4
Q
What is the focal length of plane mirror?
A
Infinity
