MCQ
Sum of $(x + y = ?)$


- A$2$
- B$4$
- ✓$5$
- D$6$

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$(a)$ Photon is a positively charged nuclear particle
$(b)$ Size of nucleus is very small as compared to the size of atom
$(c)$ Photoelectric effect and diffraction show particle nature of light
$(d)$ Planck's constant has same dimensions as angular momentum
The correct statements is/are