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Ray Optics and Optical Instruments

JEE Main 2024 (Online) 27th January Morning ShiftMCQEasy📈 Topic in 28% papers+4−1
Ques. 1JEE Main 2024, 27 January (Morning Shift)

If the refractive index of the material of a prism is ( A2 ), where A is the angle of prism then the angle of minimum deviation will be

  1. - 2A
  2. 2-2A
  3. - A
  4. 2-A

Answer

(1) - 2A

Solution

Prism formula: = ( A+ m2 ) A2

= A2= A2 A2

( A+ m2 )= A2= ( 2- A2 )

A+ m2= 2- A2

m= -2A

Answer: (1)

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Ques. 2JEE Main 2024, 27 January (Morning Shift)

Two immiscible liquids of refractive indices 85 and 32 respectively are put in a beaker as shown in the figure. The height of each column is 6 cm. A coin is placed at the bottom of the beaker. For near normal vision, the apparent depth of the coin is 4 cm. The value of is . [figure]

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