Logic Gates MCQs (Multiple Choice Questions) PDF Download - 6

The two inputs A and B of NAND gate have 0 output, if

1. A is 0
2. B is 0
3. both are zero
4. both are 1

In a magnetic field of 2.50 × 10^-3 T, if magnetic force is equal to proton's weight, then the proton moves with the speed of

1. 3.09 × 10^-5 m s^-1
2. 4.09 × 10^-5 m s^-1
3. 2.09 × 10^-5 m s^-1
4. 0.09 × 10^-5 m s^-1

Units given by the system international for measuring physical quantities are called

1. IS units
2. SI units
3. S units
4. I units

When work done on a body equals the change in its kinetic energy, this principle is known as

1. work done principle
2. work-energy principle
3. work-velocity principle
4. speed-displacement principle

When K.E_max of photoelectrons is zero, then the frequency of incident photon relative to threshold frequency is

1. less
2. equal
3. greater
4. small