Lab Activity: To Determine Refractive Index of Glass Slab Using Travelling Microscope

A student has taken observations for finding the focal length of a convex lens for four positions of the objects in the range $f$ to $2f$. What is the maximum number of points that he can plot to draw the graph?

A $u$ vs $v$ graph is drawn for a convex lens. If the point Z is the intersection point of the angle bisector of the angle between the two axes and the hyperbola, then what will be the measure of the focal length of the lens?

What is the shape of the  $u-v$ graph plotted for a convex lens?

Why is it important to make sure the optical bench's center line and the mirror's major axis are parallel when determining  v values for various values of u and the focal length in the case of a concave mirror?

Which one of the following is the purpose of using the lycopodium powder in the experiment to find the refractive index of glass?

Three observations were taken to find the refractive index of the material of glass slab. The reading for the mark on the paper $\left(R_1\right)$, The reading on the mark of the paper with slab $\left(R_2\right)$ , and the reading for lycopodium powder $\left(R_3\right)$. Which of the following will be the correct formula for finding the refractive index?

There are $20$ small divisions within $1 \mathrm{cm}$ on the main scale and $50$ divisions on the vernier scale coincide with $49$ divisions on the main scale. While taking the readings a student found the $1 \mathrm{cm}$ mark of the main scale just before the zero of the vernier scale and ${24}^{th}$ division of the vernier scale coinciding with a division on the scale. Which one of the following is the correct reading to be noted in the observation table?

Which of the following is a common observation for calculating the real thickness and apparent thickness of a glass slab using a travelling microscope?

The graph between $\frac{1}{u}$ and $\frac{1}{v}$ is drawn for various positions of the object in front of a convex lens. The focal length of the lens will be

Observations are to be taken to plot a $u-v$ graph for the convex lens. Which of the following options is correct for the position of the object needle?

A $u-v$ graph is plotted for a convex lens of focal length $10 \mathrm{cm}$. What will be the values of $u$ and $v$ corresponding to the point of intersection of the hyperbola with the bisector of the angle between the X-axis and the Y-axis?