Question
What is the purpose of a CAPTCHA in computer
security?Solution
CAPTCHA stands for "Completely Automated Public Turing test to tell Computers and Humans Apart." Its primary purpose is to distinguish between human users and automated bots
Which device measures temperature?
In which direction does torque act?
Let the electric field part of an electromagnetic wave is E = {(2.3 N/C) cos [(1.2 rad/m) y + (2.4 × 108 rad/s)t]} î.
Compute the...
In AC circuits, AC meters measure –
Fog is an example of –
Which among the following is not a characteristic of transition metals?
A uniform wire is bent into a circle and a battery is connected across a chord that subtends an angle of 60° at the center. What is the ratio of curren...
A coil takes 4 A from a 12 V DC source. When connected to a 12 V, 50 rad/s AC source, the current is 2.4 A. The inductance of the coil is:
Calculate the speed of light in diamond if its refractive index is 2.4.
(Speed of light = 3 × 10⁸ m/s)
A transformer works on which principle?
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