What are the main components of a spherometer?

• Pitch scale, circular disc, central screw, and three legs

• Pitch scale, circular disc, central screw, and two legs

• Pitch scale, circular disc, central screw, and no legs

• Pitch scale, circular disc, central screw, and four legs

How is the least count of a spherometer calculated?

• Pitch minus the number of divisions on the circular scale

• Pitch plus the number of divisions on the circular scale

• Pitch multiplied by the number of divisions on the circular scale

• Pitch divided by the number of divisions on the circular scale

What is the purpose of inserting a paper strip during the measurement of the radius of curvature?

• To ensure the spherometer is level

• To calculate the least count of the spherometer

• To measure the thickness of the spherical surface

• To confirm contact between the screw tip and the spherical surface

Which formula is used to calculate the radius of curvature of a spherical surface?

• R = l s by 68 - H by 2

• R = l s by 68 / H by 2

• R = l s by 68 + H by 2

• R = l s by 68 * H by 2

What is the formula for calculating the thickness of a glass strip using a spherometer?

• T = n * p + x * LC

• T = n / p + x * LC

• T = n * p - x * LC

• T = n * p / x * LC