Calorimetry is the study that related with determining the changes in energy of a system by measuring the heat exchanged with the surroundings and by this holding the law of conservation of energy.

The diagram below shows a magnetic needle kept just below the conductor AB which is kept in the North-South direction. i) In which direction will the needle deflect when the key is closed? ii) Why is the deflection produced? iii) What will be the change in the deflection if the magnetic needle is taken just above the conductor AB? iv) Name one device which works on this principle.

According to the Right-Hand Thumb Rule for the magnetic field, when we hold a current-carrying conductor in the right hand, where the thumb points towards the direction of the current. When we wrap the fingers around the conductor, the fingers point towards the direction of the magnetic field lines. i) In the first case, when the key is closed the current is from B to A. So, as per the right-hand thumb rule just below the conductor, the direction of the magnetic field is towards east. So, due to this needle will deflect towards east. ii) The deflection is produced due to the magnetic field created when current is passed through the wire. iii) In the second case when a magnetic needle is kept just above the conductor when the key is closed the current direction will reverse i.e. from B to A. So, applying right-hand thumb rule just above the conductor, the direction of the magnetic field generated is towards west. So, the needle will deflect towards the West. iv) A device that works on this principle is a magnetic sensor.

Rewrite and complete the following nuclear reaction by filling in the atomic number of Ba and mass number of Kr: U 92 235 + n 0 1 → Ba _ _ _ 144 + Kr 36 _ _ _ + 3 n 0 1 + Energy

For the better understanding of nuclear reaction, a sample of uranium is bombarded with neutrons in an attempt to produce new elements with Z < 92 . It has been observed that lighter elements (lower atomic number) such as Barium ( Z = 56 ) are formed during the reaction and releases heat. U 92 235 + n 0 1 → Ba 56 144 + Kr 36 88 + 3 n 0 1 + Energy

Calorimetry is the study that related with determining the changes in energy of a system by measuring the heat exchanged with the surroundings and by this holding the law of conservation of energy.

EASY

10th ICSE

IMPORTANT

Earn 100

The diagram below shows a dual control switch circuit connected to a bulb. Out of A & B which one is the live wire and which one is the neutral wire?

Important Questions on Latest ICSE Examination Question Paper-2019 (Solved)

EASY

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 14 - Latest ICSE Examination Question Paper-2019 (Solved)>SCIENCE PAPER - I (PHYSICS)>Q 8

Question Image

The diagram above shows a circuit with the key k open. Calculate the resistance of the circuit when the key k is open and calculate the current drawn from the cell when the key k is open.

HARD

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 14 - Latest ICSE Examination Question Paper-2019 (Solved)>SCIENCE PAPER - I (PHYSICS)>Q 8

Question Image

The diagram above shows a circuit with the key k open.

Calculate the resistance of the circuit when the key k is closed.

Calculate the current drawn from the cell when the key k is closed.

EASY

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 14 - Latest ICSE Examination Question Paper-2019 (Solved)>SCIENCE PAPER - I (PHYSICS)>Q 9

Define Calorimetry.

MEDIUM

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 14 - Latest ICSE Examination Question Paper-2019 (Solved)>SCIENCE PAPER - I (PHYSICS)>Q 9

Name the material used for making a Calorimeter. Why is a Calorimeter made up of thin sheets of the this material?

HARD

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 14 - Latest ICSE Examination Question Paper-2019 (Solved)>SCIENCE PAPER - I (PHYSICS)>Q 9

The melting point of naphthalene is

80 ° C

and the room temperature is

30 ° C

. A sample of liquid naphthalene at

100 ° C

is cooled down to the room temperature. Draw a temperature time graph to represent this cooling. In the graph, mark the region which corresponds to the freezing process.

MEDIUM

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 14 - Latest ICSE Examination Question Paper-2019 (Solved)>SCIENCE PAPER - I (PHYSICS)>Q 9

104 g

of water at

30 ° C

is taken in a calorimeter made of copper of mass

42 g

. When a certain mass of ice at

0 ° C

is added to it, the final steady temperature of the mixture after the ice has melted, was found to be

10 ° C

. Find the mass of ice added. (Specific heat capacity of water =

4.2 J g^{- 1} ° C^{- 1}

, Specific latent heat of fusion of ice =

336 J g^{- 1}

, Specific heat capacity of copper =

0.4 J g^{- 1} ° C^{- 1}

)

HARD

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 14 - Latest ICSE Examination Question Paper-2019 (Solved)>SCIENCE PAPER - I (PHYSICS)>Q 10

Draw a neat labeled diagram of an A.C. generator.

EASY

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 14 - Latest ICSE Examination Question Paper-2019 (Solved)>SCIENCE PAPER - I (PHYSICS)>Q 10

Define nuclear fission.

The diagram below shows a dual control switch circuit connected to a bulb. Out of A & B which one is the live wire and which one is the neutral wire?

Important Questions on Latest ICSE Examination Question Paper-2019 (Solved)

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