Persistence of vision is the phenomenon of the eye by which an afterimage is thought to persist for approximately one twenty-fifth of a second on the retina. In the early days of cinema, it was scientifically determined that a frame rate of less than 16 frames per second (frame/s) caused the mind to see flashing images. Audiences still interpret motion at rates as low as ten frames per second or slower, but the flicker caused by the shutter of a film projector is distracting below the 16-frame threshold.

Correct Option: B

Persistence of vision is the phenomenon of the eye by which an afterimage is thought to persist for approximately one twenty-fifth of a second on the retina. In the early days of cinema, it was scientifically determined that a frame rate of less than 16 frames per second (frame/s) caused the mind to see flashing images. Audiences still interpret motion at rates as low as ten frames per second or slower, but the flicker caused by the shutter of a film projector is distracting below the 16-frame threshold.

In digital logic, an inverter or NOT gate is a logic gate which implements logical negation. An inverter circuit outputs a voltage representing the opposite logic-level to its input. Inverters can be constructed using a single NMOS transistor or a single PMOS transistor coupled with a resistor.

Correct Option: D

In digital logic, an inverter or NOT gate is a logic gate which implements logical negation. An inverter circuit outputs a voltage representing the opposite logic-level to its input. Inverters can be constructed using a single NMOS transistor or a single PMOS transistor coupled with a resistor.

Radioactive elements can be traced out in living cell through a technique called Autoradiography.

Correct Option: C

Radioactive elements can be traced out in living cell through a technique called Autoradiography.

Kepler’s law of planetary motion states that the square of the time period is proportional to the cube of the semi-major axis.

Correct Option: C

Kepler’s law of planetary motion states that the square of the time period is proportional to the cube of the semi-major axis.

The oil in the wick of lamp rises due to phenomenon of capillarity. This phenomenon is called molecular property of matter.

Correct Option: B

The oil in the wick of lamp rises due to phenomenon of capillarity. This phenomenon is called molecular property of matter.