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Lens formula is given as
Magnification for spherical lens is correctly given as
The power of lens is expressed in
An optician prescribe a lens of power -5 D. The lens is ___ having focal length ___m.
An optician prescribe a lens of power +2.5 D. The lens is ___ having focal length ___cm.
Ray of light that falls on the object is called___, and the ray of light that get reflected from the object is called ___
First law of reflection states that the angle of incidence is ___ angle of reflection.
Second law of reflection states that?
Image formed by plane mirror is?
The ratio of size of image to size of object in plane mirror is ?
If object is placed at 60 cm from the plane mirror, then the image will be formed at?
In the physics laboratory two objects are kept on the table named A and B. Both have a polished surface and a reflecting surface. Reflecting surface of A is curved inwards while that of B is curved outwards. The objects A and B are most likely
Which of the following is an example of concave mirror?
Center of the spherical mirror is called ?
In concave mirror center of curvature ___ while in convex mirror it___.
The distance of pole to center of curvature is called
Rays parallel to principal axis after falling on the mirror converges to a common point called
For a concave mirror if object is placed at infinity, the image will be formed at
For a concave mirror if object is placed beyond center of curvature, the image will be formed
For a concave mirror if object is placed at center of curvature, the image will be formed
For a concave mirror if object is placed between center of curvature C and principal focus F, the image will be formed at
For a concave mirror if object is placed at focus, the image will be formed at
For a concave mirror if object is placed between pole and principle focus, the image will be formed
If Incident ray is parallel to principal axis then reflected ray from concave mirror
If Incident ray pass through focus then reflected ray from concave mirror
If Incident ray is passes through center of curvature then reflected ray from concave mirror
If Incident ray passes through pole of concave mirror then
If u is object distance, v is image distance and f is the focal length of spherical mirror then the relation between u, v and f is correctly represented as
Find the focal length of convex mirror whose radius of curvature is 40cm
Find the focal length of convex mirror if object placed at 20cm produce image at 20cm.
The object placed at some point forms image at center of curvature of a concave mirror and if distance between pole and focus is 30 cm then at what distance the object is located.
Which of the following is true with respect to magnification of spherical mirrors
a. It is the ratio of height of object to height of image
b. It can be also expressed as negative ratio of image distance to object distance
c. Magnification is always greater than zero
A concave mirror produces three times magnified real image of object placed at10 cm, the focal length of mirror is
Which of the following is an example of refraction?
Refraction of light occurs because
A ray of light travelling in air enters in glass medium, the ray of light must
A ray of light travelling in air enters in glass medium, the ray of light must
Which of the following is true with respect to refraction of light through rectangular glass slab
Snell’s Law give the relationship between angle of incidence and angle of refraction. It is expressed as
If a medium P have higher refractive index than Q then the extent of light bending is higher in
Refractive index of diamond is 2.42 then it signifies
Absolute Refractive index of water is
In which of the following case speed of refracted light ray will be higher
A transparent material having two curved surfaces is a
If spherical lens has thick middle part than ends then it is
Concave lens is also called
Convex Lens is also called
Aperture of spherical lens is the
In case of spherical lenses, parallel light rays after refraction, converges to a common point or appears to diverge from common point called as
In spherical lenses, ray parallel to principal axis, after refraction,
In spherical lenses, ray passing through focus, after refraction
In spherical lenses, ray passing through optical center, after refraction
If object is placed at infinity, the image formed by convex lens will be
If object is placed beyond 2F1, the image formed by convex lens will be
If object is placed at 2F1, the image formed by convex lens will be
If object is placed between F1 and 2F1, the image formed by convex lens will be
Lens formula is given as
Magnification for spherical lens is correctly given as
The power of lens is expressed in
An optician prescribe a lens of power -5 D. The lens is ___ having focal length ___m.
An optician prescribe a lens of power +2.5 D. The lens is ___ having focal length ___cm.
When object is at infinity concave mirror forms image which is
When object is beyond center of curvature concave mirror forms image which is
For a concave mirror if object is placed at center of curvature, the image formed at center of curvature will be
During image formation by concave mirror if enlarged, real and inverted image forms beyond C, then the object must have been placed
During image formation by concave mirror if enlarged, real and inverted image is forming at infinity then the object must be present
In which of the following arrangement using concave mirror a virtual and erect image can be obtained
Mirrors used by dentists to view teeth problems is a
Why the rear-view mirrors in vehicles are convex mirrors?