Physics

How is the e.m.f. across primary and secondary coils of a transformer
How can a temperature in degree Celsius be converted into S.I. unit of temperature
A solid metal weighing 150 g melts at its melting point of 800° C by providing heat at the rate of 100 W
Identify the following wires used in a household circuit
What are isobars
State any two advantages of electromagnets over permanent magnets
Derive a relationship between S.I. and C.G.S. unit of work
A half metre rod is pivoted at the centre with two weights of 20 gf and 12 gf suspended at a perpendicular distance
A ray of light XY passes through a right angled isosceles prism as shown below
An object AB is placed between O and F1 on the principal axis of a converging lens as shown in the diagram
An object is placed at a distance of 12 cm from a convex lens of focal length 8 cm
Draw the diagram of a right angled isosceles prism which is used to make an inverted image erect
The diagram above shows a wire stretched over a sonometer
A person is standing at the sea shore. An observer on the ship which is anchored
A fuse is rated 8A. Can it be used with an electrical appliance rated 5 KW, 200 V? Give a reason.
Find the equivalent resistance between A and B
An electric iron is rated 220V, 2kW
Heat supplied to a solid change it into liquid. What is this change in phase called
State two differences between Heat Capacity and Specific Heat Capacity
The temperature of 170g of water at 50°C is lowered to 5°C by adding certain amount of ice to it. Find the mass of ice added