The refractive index of glass is $1.5$. What is the speed of light in glass? Speed of light in vacuum is $3.0 \times 10^{\mathrm{A}} \mathrm{ms}^{-1}$.
Consider interference between two sources of intensities I and 4I. What will be the intensity at points where phase differences are:
The frequency at which the impedance of the circuit boorens mavimum is a $\frac{1}{2 \pi} \sqrt{\frac{1}{L C}+\frac{R^{2}}{L^{2}}}$ b $\frac{1}{2 \pi} \frac{1}{\sqrt{1 C}}$ c $\frac{1}{2 \mathrm{z}} \sqrt{\frac{1}{\mathrm{LC}}-\frac{\mathrm{R}^{2}}{\mathrm{~L}^{2}}}$ D $\frac{1}{2 \mathrm{e}} \frac{\mathrm{R}}{\mathrm{L}}$
State whether the following is true or false: The magnetic field inside a long circular coil carrying current will be parallel straight lines.
A galvanometer with resistance $100 \Omega$ gives full scale deflection with a current of $10 \mathrm{~mA}$. The value of shunt, in order to convert it into an ammeter of 10 ampere range, will be A $-10 \Omega$ B $1 \Omega$ C $0.1 \Omega$ D $0.01 \Omega$
Derive an expression for electric potential at a point due to an electric dipole. Discuss the special cases.
Derive an expression for the potential at a point due to a short dipole. Hence show what will be the potential at an axial and an equatorial point :
How does concave lens correct myopia? A Increases the curvature of the eye lens B Forms the image of the object at the retina C Decreases the elongation of the eyeball D All of the above Correct option is (B) Forms the image of the object at the retina