6² - 2 = 36 - 2 = 34 12² = 144 17² - 2 = 289 - 2 = 287 10² - 2 = 100 - 2 = 98
The part of the eye having the largest refractive index is -
A stone of mass 0.3 kg tied to the end of a string is whirled round in a circle of radius 1.2 m with a speed of 20 rev./ mim in a horizontal plane. Wha...
The image of an object formed on the retina of the eye is -
Sounds of frequencies less than about ______ vibrations per second cannot be detected by the human ear.
What was invented by 'Zacharias Janssen'?
If the distance between two consecutive crests is L, then the wavelength is given by______.
Which of the following is the best conductor of electricity?
Bolometer is used to measure –
A piece of ice is floating in water kept in a beaker. When all the ice melts the level of water will -
Noise is measured in –