Source of EM Waves

Q.

The wavelength of light visible to eye is of the order of

1. ${10}^{-2}$ m

2. ${10}^{-10}$ m

3. 1 m

4. $6\times {10}^{-7}$ m

Q. An electromagnetic wave can be created by accelerating charge.

1. False
2. True

Q. Properties of x-ray