Question 2 :
State whether the following statement is True or False. <br/>A real image can be obtained by putting an object at any distance from a convex mirror
Question 3 :
An object is placed somewhere in front of concave mirror. The focal length of the mirror is $10.0 cm$. The image for this object CANNOT be formed in which of the following locations?
Question 4 :
The focal length of a convex lens is $5\,cm$,where should the object be placed to get  a real image with same size as that of object:
Question 8 :
A converging lens has a focal length of $50 cm$. The power of the lens is
Question 10 :
If a $3cm$ tall object placed perpendicular to principal axis of a convex lens of focal length $15cm$ produces a real invented image of height $15cm$, then its object distance $(u)$ is ................ and image distance $(v)$ is ................
Question 12 :
Object when placed at ________ in front of concave mirror magnification of -1 is obtained.
Question 13 :
A real image, equal in size to the object, is obtained when the object is placed at the centre of curvature in front of which mirror?
Question 14 :
The focal length of a convex lens is $25cm$. Find its power with sign.<br/>
Question 16 :
If $f$ is focal length of the lens in $cm$, then the power of a lens is equal to:
Question 17 :
A ray of light travelling in air strikes the surface of glass at angle of $45^{\circ}$. The angle of refraction in the glass will be :
Question 18 :
A short sighted person can see distinctly only those objects which lie between $10cm$ and $100cm$ from him, The power of the spectacle lens required to see a distance object is
Question 19 :
Which of the following is not an application of convex lens?
Question 20 :
A ray of light coming parallel to the principal axis after passing through a convex lens, has passed through its :
Question 22 :
During refraction through a glass block, the angle of refraction _______.
Question 23 :
$ \dfrac{\sin i}{\sin r}  =$constant, the value of constant depends upon<br/>a) Pair of media <br/>b) Color of incident light<br/>c) Wave length <br/>d) Refracting nature of material<br/>
Question 24 :
Identify the phenomenon due to which a converging lens forms an image :
Question 25 :
In order to get a diminished virtual image, the object can be placed anywhere in front of a :
Question 26 :
When the face is very close to the spoon the image formed by the outside bulged part?
Question 27 :
State whether true or false.<br/>A concave mirror always forms erect and diminished images.
Question 28 :
Which of the following term is not associated with a lens?
Question 29 :
Ray optics fail when the size of the obstacle is :
Question 30 :
Which of the following term is not associated with a lens ?
Question 32 :
The focal length of a lens can be expressed in :
Question 33 :
A real, inverted and equal in size image is formed by
Question 34 :
A ray of light passes through a glass slab. and the angle of emergence is found smaller than the angle of incidence. So, we may conclude that the glass slab
Question 35 :
When a monochromatic light wave passes from air to glass across a plane surface of separation then:
Question 37 :
If the magnification of a body of size 1 m is 2, what is the size of the image?
Question 39 :
State whether true or false : A concave lens will always give a virtual, erect and diminished image.
Question 40 :
The relation among $u$, $v$ and $f$ for a mirror is:
Question 41 :
A virtual image larger than the object can be produced by a
Question 42 :
A rod is placed in a beaker of full of water. It appears to be bent inside the water. Which of the following property of light is responsible for the rod appearing to be bent?
Question 44 :
State whether true or false:The angle of incidence is always smaller than angle of refraction when a ray travels from air to glass, at an oblique angle
Question 45 :
A thin convex lens of focal length $10\ cm$ is placed in contact with a concave lens of same material and of same focal length. he focal length of combination will be
Question 46 :
In case of a virtual and erect image, the magnification created by the mirror is
Question 48 :
A ray of light is incident perpendicularly on a glass slab. The angle of incidence is :
Question 49 :
State whether true or falseA convex mirror is used for obtaining a real and magnified image.
