Question 2 :
What would be the position of image formed by convex lens when the object is placed at focus $F_{1}$ ?
Question 3 :
A lens bounded by two spherical surfaces, curved inwards. Such a lens is called ___.
Question 4 :
All the distances measured to the left of the origin (along - x-axis) for spherical mirror are taken as ___.
Question 5 :
An object, 4.0 cm in size, is placed at 25.0 cm in front of a concave mirror of focal length 15.0 cm. Find the nature of the image.
Question 6 :
What would be the nature of image formed by convex mirror when the object is placed at infinity?
Question 7 :
A convex mirror used for rear-view on an automobile has a radius of curvature of 3.00 m. If a bus is located at 5.00 m from this mirror, find the position of image.
Question 8 :
What would be the nature of image formed by convex lens when the object is placed between focus $F_{1}$ and optical centre O ?
Question 9 :
The centre of the reflecting surface of a spherical mirror is a point called the ___.
Question 10 :
Which of the following lenses would you prefer to use while reading small letters found in a dictionary?
Question 11 :
What would be the nature of image formed by concave mirror when the object is placed at focus?
Question 13 :
What would be the position of image formed by convex lens when the object is placed between $F_{1}$ and $2F_{1}$ ?
Question 14 :
What would be the position of image formed by convex lens when the object is placed at infinity?
Question 15 :
What would be the position of image formed by concave mirror when the object is placed between centre of curvature and focus?
Question 16 :
What would be the size of image formed by concave mirror when the object is placed at the centre of curvature?
Question 17 :
A convex mirror used for rear-view on an automobile has a radius of curvature of 3.00 m. If a bus is located at 5.00 m from this mirror, find the magnification.
Question 18 :
What would be the nature of image formed by convex lens when the object is placed between $F_{1}$ and $2F_{1}$ ?
Question 19 :
What would be the position of image formed by convex mirror when the object is placed between infinity and the pole of the mirror?
Question 20 :
What would be the nature of image formed by concave mirror when the object is placed at the centre of curvature?
Question 21 :
What would be the position of image formed by convex lens when the object is placed beyond $2F_{1}$ ?
Question 22 :
Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is $3×10^{8}ms^{-1}$.
Question 23 :
A concave lens has focal length of 15 cm. At what distance should the object from the lens be placed so that it forms an image at 10 cm from the lens?
Question 24 :
The ray of light which falls on the surface is called ___.
Question 25 :
Where should an object be placed in front of a convex lens to get a real image of the size of the object?
Question 26 :
A lens bounded by two spherical surfaces, bulging outwards. Such a lens is called ___.
Question 27 :
What would be the relative size of the image formed by convex lens when the object is placed at $2F_{1}$ ?
Question 28 :
Find the focal length of a convex mirror whose radius of curvature is 32 cm.
Question 29 :
Find the focal length of a lens of power – 2.0 D
Question 30 :
What is the relationship between distance of object (u), distance of image (v) and focal length (f) in spherical lens?
Question 32 :
A concave lens has focal length of 15 cm. If the object is placed at 30cm and image is at distance of 10cm, find the magnification produced by lens.
Question 33 :
What is the relationship between distance of object (u), distance of image (v) and focal length (f) for spherical mirror?
Question 34 :
A spherical mirror whose reflecting surface is curved outwards, is called a___.
Question 35 :
All the distances measured to the right of the origin (along + x-axis) for spherical lens are taken as ___.
Question 36 :
What would be the nature of image formed by convex lens when the object is placed beyond at $2F_{1}$ ?
Question 37 :
What would be the relative size of the image formed by convex lens when the object is placed at focus $F_{1}$ ?
Question 38 :
The reflecting surface of a spherical mirror forms a part of a sphere. This sphere has a centre. This point is called the___.
Question 39 :
What would be the nature of image formed by convex lens when the object is placed at focus $F_{1}$ ?
Question 40 :
Which type of mirror is used in headlights of a car?
Question 41 :
An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm. Find the size of the image formed.
Question 43 :
What would be the size of image formed by concave mirror when the object is placed at focus?
Question 45 :
What would be the relative size of the image formed by convex lens when the object is placed between $F_{1}$ and $2F_{1}$ ?
Question 46 :
What would be the nature of image formed by concave mirror when the object is placed at infinity?
Question 47 :
The ray of light which is perpendicular to the reflecting surface is called ___.
Question 48 :
What would be the position of image formed by concave lens when the object is placed at infinity?
Question 49 :
Which one of the following materials cannot be used to make a lens?
Question 50 :
What would be the nature of image formed by concave lens when the object is placed between infinity and optical centre O of the lens?