If the power of a convex lens is 5D then at what distance the object – McqOptions

MCQOPTIONS

1.	If the power of a convex lens is 5D then at what distance the object should be placed from the lens so that its real and 2 times larger image is formed?
A.	30 cm
B.	20 cm
C.	15 cm
D.	25 cm
Answer» B. 20 cm

Discussion

No Comment Found

Related MCQs

Transformers only work with
A magnetic field must produce a/an
The magnetic field produced either by permanent magnets or by an electromagnet called a
In the transformer, if the secondary voltage is more than the primary voltage then it is called
The total force acting on the armature can be increased by increasing the
Such use of the computer through which we can write a letter, article, book, or prepare a report is called
A CD can store up to
A small magnetically sensitive, flexible plastic wafer housed in a plastic case is called
A rigid, magnetically sensitive disk that spins rapidly and continuously inside the computer housing is termed as
As per Michael Faraday, if the forefinger points the direction of the magnetic field, the middle finger in the direction of the current, then the thumb would indicate the direction of

Related Topics

Biology

Chemistry

Math

Physics

Recent Visits