UNICAL Physics 2019/2020 Past Questions

A sonometer wire of length 100cm under a tension of 10 N, has a frequency of 250Hz. Keeping the length of the wire constant, the tension is adjusted to produce a new frequency of 350Hz. The new tension is

The wavelength of the, first overtone of a not in a closed pipe of length 33cm is ....

A wire of length 100.0m at 30°C has a linear expansivity of 2 x 10^-5K^-1. Calculate the length of the wire at a temperature of -10°C

A thermometer records 680 mmHg at steam point and 440 mmHg at ice point. The temperature it records at 380 mmHg is

Positive charges usually move from

Which of these instruments is suitable for making the most accurate measurement of the internal diameter of a test tube?

Any successful lift-off of space-craft uses the application of

A temperature of 20°C is the same as

A ball is thrown vertically into the air with an initial velocity u. What is the greatest height reached?

Step down transformer has a power output of 50W and efficiency of 80%. If the mains vow is 200V, calculate the primary current of the transformer.