3x to the power of -2 x 4x to the power of -3

Answer =

Step-by-step explanation:

Step 1:-

simplifying

base are equal powers are added

on simplification

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: