MEDIUM
12th Uttarakhand Board
IMPORTANT
Earn 100

Explain construction and working of compound microscope with diagram and find expression for its magnifying power when final image is formed at least distance of distinct vision.
Important Questions on Ray Optics and Optical Instruments
MEDIUM
12th Uttarakhand Board
IMPORTANT
Light of wavelength is coming from a star. What is the limit of resolution of a telescope whose objective has a diameter of .

EASY
12th Uttarakhand Board
IMPORTANT
Write the SI unit for power of a lens.

MEDIUM
12th Uttarakhand Board
IMPORTANT
Obtain the formula for combined focal length of two thin lenses in contact.

MEDIUM
12th Uttarakhand Board
IMPORTANT
What do you understand by resolving power of a microscope? How will resolving power of microscope be affected when Wavelength of light used decreases

MEDIUM
12th Uttarakhand Board
IMPORTANT
What do you understand by resolving power of a microscope? How will resolving power of microscope be affected when-
Diameter of objective lens decreases

MEDIUM
12th Uttarakhand Board
IMPORTANT
What do you understand by total internal reflection? Write essential conditions for it.

MEDIUM
12th Uttarakhand Board
IMPORTANT
A tank is filled with water to a height of . The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be . What is the refractive index of water?

EASY
12th Uttarakhand Board
IMPORTANT
The radii of curvature of a double convex lens are each and refractive index of the material of the lens is . What will be focal length of the lens?
