Refractive Index of a Glass Slab Quiz

What is the primary aim of the experiment involving the glass slab?

• To find the weight of the glass slab

• To measure the thickness of the glass slab

• To determine the refractive index of the glass slab

• To calculate the density of the glass slab

Which of the following is NOT a part of the traveling microscope?

• Spirit level

• Vertical Vernier scale

• Horizontal Vernier scale

• Eyepiece

What is the least count of the traveling microscope?

• 0.001 cm

• 0.1 cm

• 0.01 cm

• 0.05 cm

What should be done to ensure the base of the microscope is horizontal?

• Adjust the eyepiece

• Rotate the main scale

• Use the fine adjustment screw

• Adjust the leveling screws

Why is it important not to change the screw after initial setup?

• To maintain focus

• To ensure accurate readings

• To prevent damage

• To save time

How is the real thickness of the glass slab calculated?

• R1 minus R2

• R3 minus R1

• R2 minus R1

• R3 minus R2

What is the purpose of spreading lycopodium powder on the glass slab?

• To clean the surface

• To measure the thickness

• To focus the microscope

• To see the particles clearly

What should be done if the microscope is out of focus after placing the glass slab?

• Rotate the eyepiece

• Adjust the horizontal scale

• Raise the entire lens system

• Lower the microscope

What is the formula for calculating the refractive index of the glass slab?

• Real thickness divided by apparent thickness

• Apparent thickness divided by real thickness

• Real thickness plus apparent thickness

• Apparent thickness minus real thickness

What was the refractive index of the glass slab found to be?

• 1.5033

• 1.4033

• 1.6033

• 1.7033