Questions

Increase in volume = Volume of the cube = (15 x 15 x 15) cm3.

\Rise in water level = volume/area = (15 x 15 x 15)/(20 x 15) cm = 11.25 cm.

A person one who writes books, stories or articles is called as an author.

The given sentence means that, at working hours that person is reserved means he is very timid, feel shy or not talkative or won't share his feelings.

Geothermal energy is heat energy generated and stored in the Earth. Geothermal energy has been used for thousands of years in some countries for cooking and heating. It is simply power derived from the Earth's internal heat.

N.H. 1 is also called The Sher Shah Suri Marg between Delhi and Amritsar.

A touch screen is the only device which works as both an input and an output device among the given options. You view the options available to you on the screen (output) and you then use your finger to touch the option that you have chosen (input).

Hence, Screen is not purely output device.

Microprocessors are used in the computers of fourth generation computers. Personal microcomputers were possible due to the microprocessors.

Microprocessors further revolutionized the development of computers.

The first microprocessor called Intel 4004 was developed by American Intel Corporation in 1971.