Yes! Both (b) and (d) are correct. E = hn, and E = hc/l.

 Using E = hc/l

 For l = 400 nm: E = 6.63X10-34 X 3.0X108/400X10-9 = 5.0X10-19 J

 For l = 700 nm: E = 6.63X10-34 X 3.0X108/700X10-9 = 2.8X10-19 J
 
 

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