One micro coulomb charge is equal to:
10-3c
103c
106c
10-6c
Which animal have ability to move his eye lens:
Snake
Fish
Ant
Tiger
Spherical mirrors are used in:
Medical
Search light
Microscope
All of these
Optical fibres works on the principle of:
Reflection
Refraction
Total internal reflection
Diffraction
In C.R.O grid is always connected with potential:
Negative
Positive
High positive
Zero positive
The value of refractive index of water is:
2.33
1.36
1.33
1.39
