What is the radius of curvature of spherometer?
=1/100=0.01 mm. 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.
What is spherometer use for?
Any surface that is curved has a radius of curvature, the radius of the sphere that approximates the surface locally. Thus a spherometer can measure the radius of curvature of an item such as a lens and curved mirrors that are spherical in shape.
How do you determine the radius of curvature of a concave mirror using a spherometer?
Procedure
- Raise the central screw of the spherometer and press the spherometer gently on the practical note-book so as to get pricks of the three legs.
- Measure the distance between the pricks (points) by joining the points as to form a triangle ABC.
- Note these distances (AB, BC, AC) on notebook and take their mean.
How does a spherometer work?
The working principle of a spherometer is based on the micrometer screw. It is used for measuring with a small thickness of flat materials such as glass or for measuring the radius of curvature of a spherical surface.
What is radius of curvature in physics class 11?
Complete step-by-step answer: Radius of curvature of a path at a point is a circle to which the curve of the path touches the circle tangentially. It tells us how much the curve is at this point. If the radius of curvature is infinite then it means that the curve is a straight line.
How do you find the radius of curvature?
Radius of Curvature Formula R= 1/K, where R is the radius of curvature and K is the curvature.
Can you measure the radius of curvature of wrist watch glass by using a spherometer?
No the radius of curvature of wrist watch glass cannot be measured by using a spherometer. Explanation: The curvature of wrist watch glass cannot be measured using the spherometer beacuse the legs of spherometer cannot rest on the small surface of wrist watch.
What is the limitations of a spherometer?
Explanation: we can’t measure the radius of the curvature of the Earth with a spherometer. First, a normal spherometer is obviously much too small to measure the radius of the Earth . second, a very large spherometer would do the job just fine once you take several measurements to get an average.
How do you find the radius of curvature of a mirror?
The radius of curvature of the spherical mirror can then be calculated: R=L+Δ1+Δ2+r R = L + Δ 1 + Δ 2 + r , where r is the ROC of the tracker ball.
Can you measure the radius of curvature of wrist watch glass by using a spherometer Why?
Answer: No the radius of curvature of wrist watch glass cannot be measured by using a spherometer. Explanation: The curvature of wrist watch glass cannot be measured using the spherometer beacuse the legs of spherometer cannot rest on the small surface of wrist watch.
What is the pitch of a spherometer give its value?
1 mm
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 radius of curvature in Physics 12?
The radius of curvature of a spherical mirror is the radius of the circle of which the spherical mirror is a part. It can also be defined as the distance between the centre of curvature of the mirror and the pole of the mirror on the principal axis. The radius of curvature is also a measure of how curved the mirror is.
How to determine radius of curvature of a given spherical surface?
To determine radius of curvature of a given spherical surface by a spherometer. a Spherometer for experiment, a convex surface (it may be an unpolished mirror), a big size plane glass slab or mirror which is plain. The figure which is shown below is a schematic diagram of a single disk spherometer.
How can A spherometer measure the radius of a surface?
Any surface that is curved has a radius of curvature, the radius of the sphere that approximates the surface locally. Thus a spherometer can measure the radius of curvature of an item such as a lens and curved mirrors that are spherical in shape.
How are the legs of A spherometer moved?
The tips of the three legs form an equilateral triangle and lie on the radius. There is a central leg which can be moved in a perpendicular direction. Below is the experiment on how to determine radius of curvature of a given spherical surface by a spherometer. To determine radius of curvature of a given spherical surface by a spherometer.
Why is a convex surface called A spherometer?
Spherometer, convex surface (it may be unpolished convex mirror), a big size plane glass slab or plane mirror. It works on the principle of micrometre screw (Section 2.09) It is used to measure either very small thickness or the radius of curvature of a spherical surface that is why it is called a spherometer.