MEDIUM
12th West Bengal Board
IMPORTANT
Earn 100

What is f-number of a camera lens? What is its relation with depth of the field?

Important Questions on Human Eye and Optical Instruments

MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 16 - Human Eye and Optical Instruments>EXERCISE 16>Q 6
What is the advantage of binocular vision? What does persistence of vision mean?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 16 - Human Eye and Optical Instruments>EXERCISE 16>Q 7
What do you mean by least distance of distinct vision? What is its value?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 16 - Human Eye and Optical Instruments>EXERCISE 16>Q 8

What do you mean by power of accommodation?

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 16 - Human Eye and Optical Instruments>EXERCISE 16>Q 8

What do you mean by adaptation by eye?

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 16 - Human Eye and Optical Instruments>EXERCISE 16>Q 8

What do you mean by near point of an eye? 

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 16 - Human Eye and Optical Instruments>EXERCISE 16>Q 8
What do you mean by far point of an eye?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 16 - Human Eye and Optical Instruments>EXERCISE 16>Q 9
What is the most common type of defect of vision that old people suffer from? What is the remedy of this defect?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 16 - Human Eye and Optical Instruments>EXERCISE 16>Q 10
Street lamp-posts appear to be shorter the farther they are away, although all are of same height. Why does it happen so?