Solve
Study
Textbooks
Guides
Use app
Login
>>
Class 12
>>
Physics
>>
Ray Optics and Optical Instruments
>>
Easy Questions
Ray Optics And Optical Instruments
Physics
9817 Views
Easy Qs
Med Qs
Hard Qs
>
An achromatic combination of lenses produce :
A
images in black and white
B
colored images
C
images unaffected by variation of refractive index with wavelength
D
highly enlarged images
Easy
View solution
>
An experiment is performed to find the refractive index of glass using a travelling microscope. In this experiment distances are measured by:
A
a screw gauge provided on the microscope
B
a standard laboratory scale
C
a vernier scale provided on the microscope
D
a meter scale provided on the microscope
Easy
View solution
>
The focal length of a lens of refractive index
μ
is
f
. If the lens is immersed in a liquid of refractive index
μ
then the focal length of lens is
A
2
f
B
2
f
C
infinite
D
zero
Easy
View solution
>
The refraction of light is commonly known as :
A
Bending
B
Scattering
C
Reflection
D
Interference
Easy
View solution
>
A glass slab is placed in the path of beam of convergent light. The point of convergence of light
A
moves towards the glass slab
B
moves away from the glass slab
C
remains at the same point
D
undergoes a lateral shift
Easy
View solution
>
What are the colours of the Sun observed most during sunrise/sunset and noon?
A
white and red
B
reddish and orange
C
yellow and reddish
D
orange and blue
Easy
View solution
>
Red light is used as danger signal because it is:
A
Accepted as symbol
B
Pleasing to the eye
C
Sensitive to the eye
D
Has high wavelength
Easy
View solution
>
The line joining the pole and the centre of curvature of a mirror is called the :
A
Aperture
B
Principal section
C
Principal axis
D
Pole
Easy
View solution
>
Blue colour of sky is due to:
A
scattering.
B
absorption.
C
reflection.
D
refraction.
Easy
View solution
>
A convex glass lens is immersed in water. Compared to the power in air, its power in water will :
A
increase
B
decrease
C
not change
D
decrease for red light and increase for violet light
Easy
View solution
>