Question
Why does it become pleasantly warm when the lakes start freezing
(a) Why does it become pleasantly warm when the lakes start freezing? (b) Water freezes to form ice. What change would you…
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85 g of water at 30°C is cooled to 5°C by adding certain mass of ice
85 g of water at 30°C is cooled to 5°C by adding certain mass of ice. Find the mass of ice required.…
Question
Study the diagram and calculate the total resistance of the circuit
Study the diagram: (a) Calculate the total resistance of the circuit. (b) Calculate the current drawn from the cell. (c) State whether…
Question
Below is the diagram of a transformer
Below is the diagram of a transformer: (a) Identify the type of transformer. (b) In this type of transformer which of the…
Question
The voltage-current readings of a certain material are shown in the table
The voltage-current readings of a certain material are shown in the table given below: Voltage (V) Current (I) 10 V 2 A…
Question
In the given diagram a vibrating tuning fork is kept near the mouth of a burette
In the given diagram, a vibrating tuning fork is kept near the mouth of a burette filled with water. The length of…
Question
Complete the following radioactive reaction
(a) Complete the following radioactive reaction: (b) Uranium is available in two forms U-235 and U-238. Which of the two isotopes of…
Question
Name the waves used in SONAR
(a) Name the waves used in SONAR. (b) In the below diagram Lata stands between two cliffs and claps her hands. Determine…
Question
Given are two pulleys
Given are two pulleys. (a) Copy and complete the labelled diagram connecting the two pulleys with a tackle to obtain Velocity Ratio…
Question
Two identical marbles A and B are rolled down along Path 1 and Path 2 respectively
Two identical marbles A and B are rolled down along Path 1 and Path 2 respectively. Path 1 is frictionless and Path…