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Let total number of subjects be x. Then, => (55x + 27 + 15)/x = 61 => 55x + 27 + 15 = 61x => 6x = 42 => x = 7
A transistor works as an amplifier only when:
In an experimental arrangement of a Fresnel's biprism, monochromatic light of wavelength 2. is used to produce interference fringe pattern. On introduc...
If a lens forms an image of magnification -2, what is the nature of the image?
Which of the following is the SI unit of electric charge?
Rain drops acquire spherical shape due to -
An object initially at rest explodes into several fragments. If no external forces act during the explosion, the center of mass of the fragments will:
What is the wavelength of visible spectrum?
The refractive index of glass is 1.5. What is the speed of light in glass?
(Speed of light in vacuum is 3.0 ×108 m s-1)
What is the acceleration due to gravity on the Moon?
What term refers to the superposition of two or more coherent waves to produce regions of maxima and minima?
