SSLC (English Medium) Class 10 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Find the final temperature of a copper rod. Whose area of cross-section changes from 10 m² to 11 m² due to heating. The copper rod is initially kept at 90K. (Coefficient of superficial expansion is 0.0021 /K)

If you keep ice at 0° C and water at 0° C in either of your hands, in which hand you will feel more chillness? Why?

Kilowatt hour is the unit of

The power of an electric device is a product of ______ and ______.

MCB is used to protect household electrical appliances.

The SI unit for electric current is the coulomb.

One unit of electrical energy consumed is equal to 1000 kilowatt-hour.

Match the items in column-I to the items in column-II:

Name any two devices, which are working on the heating effect of the electric current.

1. What is meant by electric current?
2. Name and define its unit.
3. Which instrument is used to measure the electric current? How should it be connected in a circuit?

Man-made radioactivity is also known as _______.

Artificial radioactivity was discovered by ______.

In which of the following, no change in mass number of the daughter nuclei takes place

1. α decay
2. β decay
3. γ decay
4. neutron decay

Gamma radiations are dangerous because

________ aprons are used to protect us from gamma radiations.

Positron is an ________.

Abbreviation of ICRP______.

_______ is used to measure exposure rate of radiation in humans.

The radio isotope of ________ helps to increase the productivity of crops.

If the radiation exposure is 100 R, it may cause ______.