MCQ Of Chapter Light Class 10 Question 7. A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by
(a) 15
(b) 20
(c) 30
(d) 0

Question

MCQ Of Chapter Light Class 10 Question 7. A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by (a) 15 (b) 20 (c) 30 (d) 0

Pawan Prajapati · Answer

Answer: d Explanation: (d) The focal length of spherical mirror does not depends on the surrounding medium.

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MCQ Of Chapter Light Class 10 Question 7. A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by (a) 15 (b) 20 (c) 30 (d) 0

MCQ Of Chapter Light Class 10 Question 7. A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by
(a) 15
(b) 20
(c) 30
(d) 0

1 Answers

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MCQ Of Chapter Light Class 10 Question 7. A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by (a) 15 (b) 20 (c) 30 (d) 0

MCQ Of Chapter Light Class 10 Question 7. A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by (a) 15 (b) 20 (c) 30 (d) 0

1 Answers

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MCQ Of Chapter Light Class 10 Question 7. A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by
(a) 15
(b) 20
(c) 30
(d) 0