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AIIMS MBBS Entrance Test 2019 Physics Paper with Answer & Solutions 26 May First Shift Part 4

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Q-14: What is the dimension of Luminous flux?

Options:

(1)

(2)

(3)

(4)

Answer: (1)

Solutions:

Dimension of Luminous flux is .

Q-15: Two circular loops having same radius and same current a are placed are placed along same axis as shown. If distance between their centres is , find net magnetic field at of point .

Image Circular Loops Radius

Options:

(1)

(2)

(3)

(4)

Answer: (3)

Solutions:

At point P, magnetic field will be in same direction by both coils.

Q-16: If half-life of an element is hours then how much of its percent will decay in 10th to 11th hours. Initial activity

Options:

(1)

(2)

(3)

(4)

Answer: (1)

Solutions:

Let active Nuclei at is then,

Active nuclei at hour

Active nuclei at hour