In medical field, C.R.O is used to display:
Heart beats
Pictures of organs
Pictures of bones
Blood pressure
Which type of image is produced by the converging lens of human eye if it views a distant object:
Real, erect, same size
Real, inverted, diminished
Virtual, erect, diminished
Virtual, inverted, magnified
Which combination forms NAND gate:
AND & OR
AND & NOT
NOT & OR
NAND & NOT
The more negative potential of grid, the more electrons will be:
Attracted
Repelled
Attracted as well as repelled
Neither attracted nor repelled
In OR operation inputs are connected as:
Series
Parallel
Both series or parallel
None of these
Which of the following quantities is not change during refraction of light:
Its direction
Its speed
Its frequency
Its wavelength
The diameter of spherical mirror is called:
Curvature
Aperture
Sphere
Both a and b
