Units and Measurements — Physics STD 11 Science — Question

A park has a radius of 10m. If a vehicle goes round it at an average speed of 18km/ hr, what should be the proper angle of banking?

What will be the ratio of the root mean square velocities of an ideal gas at temperatures of 270 K and 30K?

Which of the following two statements is more appropriate?

1. Two forces are added using triangle rule because force is a vector quantity.
2. Force is a vector quantity because two forces are added using triangle rule.

The mass of cyclist together with the bike is 90kg. Calculate the increase in kinetic energy if the speed increases from 6.0km/h to 12km/h.

As the wavelength is increased from violet to red, the luminosity:

1. Continuously increases.
2. Continuously decreases.
3. Increases then decreases.
4. Decreases then increases.

The average speed of a snail is 0.020 miles/hour and that of a leopard is 70 miles/hour. Convert these speeds in SI units.

A gas thermometer measures the temperature from the variation of pressure of a sample of gas. If the pressure measured at the melting point of lead is 2.20 times the pressure measured at the triple point of water, find the melting point of lead.

If a planet existed whose mass and radius were both half of those of the earth, what would be the value of the acceleration due to gravity on its surface as compared to what it is on the earth's surface?

Heat is transferred from inside a refrigerator at 287 K to a room at 310 K ideally, how much heat (in joules) will be given to the room by the expenditure of each joule of electrical energy?

Consider a small cube of volume 1mm³ at the centre of a circular loop of radius 10cm carrying a current of 4A. Find the magnetic energy stored inside the cube.