Question

please solve the above question

Answer 1

look

we know

wavelenght = h/mc ........(1)

according to the question ... c = distance travelelled in a sec .... but distance travelled in a sec is nothing but wavelenth

so ... c= wavelenght ..

if u put that in (1) u ll get

wavelength²=h/m

so ..wavelength = √h/m

if u dont get any step feel free to ask