Question

plz ans Q-22 a, b,c​

Answer 1

Answer:

P IS DENSER BECAUSE ANGLE OF REFLECTION IN P IS LESS THAN THAT OF Q AND ANGLE OF INCIDENCE IS SAME. THR ANGLE OF REFRACTION IS LESS IN DENSER MEDIUM.

1 DIOPTRE IS POWER OF LENS WHEN FOCAL LENGTH IS 1m.

F=1/D

=1/0.5

=1000/5

= 2m.

HOPE IT HELPS U...✌️✌️

Answer 2

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P IS DENSER BECAUSE ANGLE OF REFLECTION IN P IS LESS THAN THAT OF Q AND ANGLE OF INCIDENCE IS SAME. THR ANGLE OF REFRACTION IS LESS IN DENSER MEDIUM.

1 DIOPTRE IS POWER OF LENS WHEN FOCAL LENGTH IS 1m.

F=1/D

=1/0.5

=1000/5

= 2m.