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Optics
what is bragg,s law
Optics
1 The rope shown in the figure attached hereto is wound around a cylinder of of mass 4.0 kg, radius 10cm and
I=0.020kgm2
, where
I
is the moment of inertia about an axis along the cylinder axis. If the cylinder rolls without slipping, what the linear acceleration of its centre of mass?
Click here to see exhibit
6.7m/s2
3.3m/s2
11.2m/s2
1.5m/s2
2 The frictional force between the block and the table is 20 N. If the moment of inertia of the wheel is
4.0kgm2
, find how long it will take the block to drop
60cm
after the system is released.
Click here to see exhibit
7.37 s
1.34 s
3.71 s
4.22 s
I=0.020kgm2
, where
I
is the moment of inertia about an axis along the cylinder axis. If the cylinder rolls without slipping, what the linear acceleration of its centre of mass?
Click here to see exhibit
6.7m/s2
3.3m/s2
11.2m/s2
1.5m/s2
2 The frictional force between the block and the table is 20 N. If the moment of inertia of the wheel is
4.0kgm2
, find how long it will take the block to drop
60cm
after the system is released.
Click here to see exhibit
7.37 s
1.34 s
3.71 s
4.22 s
Optics
It is desired to cast the image of a lamp magnified 5 times upon a wall 4 m distant from the lamp. What kind of spherical mirror is required and what is its position?
Optics
How is focal length related to converging power of a convex lens?
Optics
A ray of light is incident at 60º on one face of a prism of angle 30º and emergent ray made 30º with incident ray. The refractive index of the prism is :-
(1) 1.732
(2) 1.414
(3) 1.5
(4) 1.33
(1) 1.732
(2) 1.414
(3) 1.5
(4) 1.33
Optics
Gather information about wireless communication system. Based on this information draw block diagrams to describe a general wireless communication system, this must include : Transmitter, unguided media and receiver. Find out how the different components of the system change with the change in application
Optics
A planoconvex lens is made of refractive index 1.5 . The radius of curvature of its spherical surface is 40cm . At what distance from the lens will a parallel beam of light will get focussed ? Draw a neat diagram to show the image formation from the lens . What will be the nature and power of a combination of two such lenses kept with their (a) - plane surfaces in contact. (b) - spherical surfaces in contact
Optics
What is the wavelength of a wave having a frequency of 5.76 x 1012 s-1?
Optics
Theoretically: if you and I were driving at the speed of light and I turned on the headlights would we notice any change?
Optics
A planoconvex lens is made of glass of refractive index 1.5. The radius of curvature of its spherical
surface is 40 cm. At what distance from the lens will a parallel beam of light will get focussed?
Draw a neat, clear labelled ray diagram to show image formation from the lens. What will be the
nature and power of a combination of two such lenses kept with their (i) plane surfaces in contact
(ii) spherical surfaces in contact.
surface is 40 cm. At what distance from the lens will a parallel beam of light will get focussed?
Draw a neat, clear labelled ray diagram to show image formation from the lens. What will be the
nature and power of a combination of two such lenses kept with their (i) plane surfaces in contact
(ii) spherical surfaces in contact.
