What is the correct wavelength range of the visible light?

What is the approximate value of maximum forward voltage for the visible-light LED?

For modulating a carrier frequency 0f1 MHz and peak voltage of 40 volts, 8 message signal with a frequency of 20 KHz and peak voltage 20 volts is used. What is the modulation index and the side bands produced?

Consider two wires of same material and same length. What is the ratio of their radii, if their resistances are 10 Q and 20 0, respectively?

When placed in a polarimeter, a 600 mm long tube containing 120 cc of sugar solution produces a rotation of 15°. What is the quantity of sugar contained in the solution. if the specific rotation is 60°?

Which of the following quantities is not scalar?

Compared to type a axons, type c axons are __________.

Parking is not allowed within __________ feet of a fire hydrant.

During an acute asthma attack, the obstruction is caused by _______.

In uncompensated respiratory acidosis, the _______.

With adh added but in the absence of aldosterone, _______.