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What is L in spherometer?

What is L in spherometer? To find the distance between the legs of the Spherometer

Measure the distance between the pricks by joining the points as to form a triangle. Note these distances (AB, BC, and AC) on the paper and take their mean as l.

Why is a spherometer so called?

A spherometer basically is a precision instrument to measure very small lengths. Its name reflects the way it is used to measure the radii of curvature of spherical surfaces. It is based on the principle of screw. … The small graduations on the old spherometer are 0.001 mm.

What is spherometer with example?

To Determine Radius Of Curvature Of A Given Spherical Surface By A Spherometer. A spherometer is a measuring device which has a metallic triangular frame supported on three legs. The tips of the three legs form an equilateral triangle and lie on the radius.

What is the formula used in spherometer?

R = l2/6h + h/2 is the formula which is used to calculate the radius of curvature of a spherometer.

What is vernier caliper least count?

A Vernier scale on a caliper may have a least count of 0.1 mm while a micrometer may have a least count of 0.01 mm.


What is pitch and least count?

Hint Pitch is the smallest measurement on the main scale while the least count is the smallest measurement an instrument can measure accurately.

What is the meaning of least count?

In the science of measurement, the least count of a measuring instrument is the smallest and accurate value in the measured quantity that can be resolved on the instrument’s scale. … The least count of an instrument is inversely proportional to the precision of the instrument.

What is the pitch of a spherometer give its value?

The pitch of a spherometer is 1 mm and there are 100 divisions on its disc. It reads 3 divisions on the circular scale above zero when it is placed on a plane glass plate. When it rests on a convex surface, it reads 2 mm and 63 divisions on a circular scale.

Who invented spherometer?

The first known spherometer was invented by French optician Robert-Aglaé Cauchoix in 1810. They were manufactured starting in the nineteenth century primarily for the use of opticians in grinding lenses and astronomers in grinding lenses and curved mirrors.

What curvature means?

1 : the act of curving : the state of being curved. 2 : a measure or amount of curving specifically : the rate of change of the angle through which the tangent to a curve turns in moving along the curve and which for a circle is equal to the reciprocal of the radius.

What is the distance between two legs of spherometer?

SAI SPHEROMETER 1/100 M, DISTANCE BETWEEN THE LEGS IS 23 MM (PACK OF 3)

What is the formula for least count?

Least count of a Vernier scale is calculated using the following formula, Least count = Smallest reading on main scaleNumber of divisions on Vernier scale=1mm10 = This is the least count for Vernier Callipers. Hence, the least count for Vernier Callipers is 0.1mm.

What is least count micrometer?

Micrometer Screw gauge: Definition, least count & Applications. Micrometer screw gauge is an instrument used to measure the diameter of thin wires, the thickness of small sheets of glass, plastic, etc. It can measure up-to 1/10 of mm (or 0.01 mm= 0.001 cm) which is usually called the least count of Micrometer.

What is the unit of vernier caliper?

1, the smallest measurement on the main scale is 0.1 cm or 1 mm. The vernier scale can read to 0.05 mm. So using both scales, the width can be read to the nearest 0.005 cm (or 0.05 mm).

What is the formula of least count?

Least count of a Vernier scale is calculated using the following formula, Least count = Smallest reading on main scaleNumber of divisions on Vernier scale=1mm10 = This is the least count for Vernier Callipers. Hence, the least count for Vernier Callipers is 0.1mm.

What is pitch formula?

PITCH-This is the distance from a point on the screw thread to a corresponding point on the next thread measured parallel to the axis of the thread. It is represented by the letter p. (p=1/n).

What is pitch in physics vernier calliper?

Pitch is defined as the distance travelled by the spindle per revolution which is measured by moving the head scale over the pitch scale. However, vernier callipers do not have a rotating screw, therefore, there is no pitch for vernier callipers.

Which instrument is more precise?

Screw gauge has minimum least count of 0.001cm. Hence, it is most precise instrument.

How can we make spherometer more sensitive?

you can increase the Sensitivity by using an Electromagnet.

You can increase the sensitivity by using an electromagnet with a variable resistor to finely balance your spherometer’s intrinsic, counter – clockwise torque , assuming that you are in the northern Hemisphere.

What is the formula of pitch?

PITCH-This is the distance from a point on the screw thread to a corresponding point on the next thread measured parallel to the axis of the thread. It is represented by the letter p. (p=1/n).

What is the least count of spherometer in CM?

The least count of any instrument is the smallest measurement that can be measured by that instrument. So in this case the least count of spherometer is 0.002cm which means we cannot take measurements smaller than 0.002cm.

What is the pitch of a Spherometer?

The pitch of a spherometer is 1 mm and there are 100 divisions on its disc. It reads 3 divisions on the circular scale above zero when it is placed on a plane glass plate. When it rests on a convex surface, it reads 2 mm and 63 divisions on a circular scale.

What is curvature formula?

The curvature measures how fast a curve is changing direction at a given point. There are several formulas for determining the curvature for a curve. The formal definition of curvature is, κ=∥∥∥d→Tds∥∥∥ where →T is the unit tangent and s is the arc length.

What is curvature eye?

In a perfectly shaped eye, each of these elements has a round curvature, like the surface of a smooth ball. A cornea and lens with such curvature bend (refract) all incoming light equally to make a sharply focused image directly on the retina, at the back of your eye.

What is another word for curvature?

In this page you can discover 30 synonyms, antonyms, idiomatic expressions, and related words for curvature, like: round, turn, straight, curving, bend, shape, deflection, curve, arch, roughness and concavity.

References

 

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