A sample contains equal numbers of two isotopes X and Y, each with half-lives of 10 days and 20 days respectively. What is the ratio of activities Aâ‚“ ...
When a liquid is heated in a container, which of the following processes primarily causes the heat transfer within the liquid? Â
A mass of 0.1 kg executes SHM with amplitude 10 cm. Its kinetic energy at the mean position is 8 × 10-3 J. What is its equation of motion if...
The focal length of a concave mirror is 20 cm. Where should an object be placed to get an image of the same size?
Which law states that the ratio of the potential difference across a conductor to the current through it is constant, provided the temperature remains c...
The term ‘Isoneph' indicates the lines of equal –
When a cannonball is fired, its motion is an example of ______.
An image formed by a plane mirror is ______.
A transformer has 1000 turns in the primary and 100 in the secondary coil. If input voltage is 220 V, output voltage is:
Which of the following statement is correct?
I. Value of ‘g’ is higher at poles than equator
II. Weight of an object at moon is 1...
