Lenses

Question 1 Define optical centre? Question 2 Define principal focus? Question 3 Define focal length? Question 4 Define principal foci? Question 5 Define first focal plane? Question 6 Define first principal focus? Question 7 Define second principal focus? Question 8 What do you mean by aperture of lens? Question 9 What are converging lenses? Question 10 what…

Refraction by spherical lenses

Question 1 What is a lens? Question 2 How many type of lens are them? Question 3 What is a convex lens? Question 4 What is a concave lens? Question 5 Draw Bi-convex,plane-convex and concavo-convex lens? Question 6 Draw Bi-concave,plane-concave and convexo-concave lens? Refraction by spherical lenses Lens is a transparent medium bounded by two…

Refraction of light

Question 1 Define the term refraction of light? Question 2 Draw a diagram showing the bending of a ray of light when it travels from a rare medium to a denser medium? Question 3 State two laws of refraction? Question 4 What is the cause of refraction of light? Refraction of light The phenomenon of…

Images formed by Concave lens

Question 1 What are the sign conventions for measuring the distances for spherical lens? Question 2 The image formed by concave lens is seen to be virtual,erect and highly diminished than the object.What is the position of the object? Question 3 Where should an object be placed in front of a concave lens so as to obtain…

Images formed by convex lens

Question 1 Where should an object be placed in front of a convex lens so as to obtain image on same side of lens? Question 2 The image formed by convex lens is seen to be real,inverted and diminished.What is the position of the object? Question 3 The image formed by convex lens is seen to be real,inverted…

Refraction through a glass slab

Question 1 What is meant by lateral shift? Question 2 The refractive index of dense flint glass is 1.65 and for alcohol it is 1.36,with respect to air.What is the refractive index of the dense flint glass with respect to alcohol? Question 3 Draw a diagram showing refraction of light through a glass slab? Refraction…

Light-Reflection

Question 1 What are luminous objects.Give example? Question 2 What are non-luminous objects.Give example? Question 3 State the laws of reflection? Question 4 What is beam of light? Question 5 Define the term reflection of light? Question 6 What is a real image? Question 7 What is a virtual image? Question 8 Write the properties…

Power and application of a lens

Question 1 Find the power of concave lens of focal length 2m? Question 2 Find the focal length of concave lens whose power is -2 D? Question 3 The power of lens is 2.5 D.What is the focal length and the type of lens? Question 4 A convex and concave lens of focal length 50…

Refractive index

Question 1 What is refractive index? Question 2 What is the speed of light in vacuum? Question 3 What is absolute refractive index? Question 4 What is relative refractive index? Question 5 What happen When light goes from rarer medium to denser medium? Question 6 What happen When light goes from denser medium to rarer medium? Question 7…

Mirror Formula

Question 1 An object is placed at a distance of 10cm from a convex mirror of focal length 15cm.Find the position and nature of the image? Question 2 A concave mirror produces three times magnified real image of an object placed at 10cm in front of it.Where is the image located? Question 3 What are…

Images formed by convex mirror using ray diagram

Question 1 Mention few applications of convex mirror? Question 2 The image formed by a convex mirror is seen to be erect,virtual and diminished.What is the position of the object? Images formed by convex mirror using ray diagram 1)Object is between infinity and pole a)Image is formed between pole and focus. b)It is erect,virtual,diminished.  2)Object…

Images formed by concave mirror using ray diagram

Question 1 The image formed by concave mirror is seen to be virtual,erect and larger than the object.What is the position of the object? Question 2 The image formed by concave mirror is seen to be real,inverted and of same size.What is the position of the object? Question 3 Where should an object be placed in…

Types of spherical mirror

Question 1 What is a concave mirror? Question 2 What is a convex mirror? Question 3 Define centre of curvature? Question 4 Define the term pole? Question 5 Define the term aperture? Question 6 What is principal focus? Question 7 what is principal axis? Question 8 What is focal plane? Question 9 What is focal…