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Heya,
30)option 3
As neutrons and protons together form nucleus,mass of nucleus will be more than mass of neutron.
31)Answer-option 3
When object is placed at center of curvature then image will form at centre of curvature.So, distance between center of curvature and pole will be image distance i.e, R=2f
32)Answer-option 2
Yellow colour is used as it has higher wavelength .
33)Anwser- option 3
Least distance of distinct vision for a normal human being is 25cm
Hope this helps......
30)option 3
As neutrons and protons together form nucleus,mass of nucleus will be more than mass of neutron.
31)Answer-option 3
When object is placed at center of curvature then image will form at centre of curvature.So, distance between center of curvature and pole will be image distance i.e, R=2f
32)Answer-option 2
Yellow colour is used as it has higher wavelength .
33)Anwser- option 3
Least distance of distinct vision for a normal human being is 25cm
Hope this helps......
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