(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Physics

The wavelength of light is 589 nm. what is its wavelength in Å?

Define the least count of vernier callipers. How do you determine it?

Define the term 'Vernier constant'.

When is a vernier Callipers said to be free from zero error?

What is meant by zero error of vernier callipers ? How is it determined? Draw neat diagrams to explain it. How is it taken in account to get the correct measurement?

A vernier callipers has a zero error of + 0.06 cm. Draw a neat labelled diagram to represent it.

Draw a neat and labelled diagram of a vernier callipers. Name its main parts and state their functions.

State three uses of the vernier callipers.

Name the two scales of a vernier callipers and explain how it is used to measure length correct up to 0.01 cm.

Describe in steps, how would you use a vernier callipers to measure the length of a small rod?

Name the part of the vernier callipers which is used to measure the following

External diameter of a tube

Name the part of the vernier callipers which is used to measure the following

Internal diameter of a mug

Name the part of the vernier callipers which is used to measure the following

Depth of a small bottle

Name the part of the vernier callipers which is used to measure the following

Thickness of a pencil.

Explain the terms : Least count of a screw gauge.
How are they determined?

Explain the terms : Pitch .
How are they determined?

Draw a neat and labelled diagram of a screw gauge.

Name its main parts and state their functions.

State one use of a screw gauge.

State the purpose of ratchet in a screw gauge.

What do you mean by zero error of a screw gauge? How is it accounted for?