Arihant Physics by D.C Pandey
A piece of cork is floating on water in a small tank. The cork oscillates up and down vertically when small ripples pass over the surface of water. The velocity of the ripples being 0.21 ms^ −1, wave length 15 mm and amplitude 5 mm, the maximum velocity of the piece of cork is
26
Jun
A piece of cork is floating on water in a small tank. The cork oscillates up and down vertically when small ripples pass over the surface of water. The velocity of the ripples being 0.21 ms^ −1, wave length 15 mm and amplitude 5 mm, the maximum velocity of the piece of cork is A [...]
A wire of density 9 gm/cm^3 is stretched between two clamps 1.00 m apart subjected extension of 0.05 cm. The lowest frequency of transverse vibrations in the wire is. (Assume Young’s modulus Y = 9∗10^10 N/m^2)
26
Jun
A wire of density 9 gm/cm^3 is stretched between two clamps 1.00 m apart subjected extension of 0.05 cm. The lowest frequency of transverse vibrations in the wire is. (Assume Young’s modulus Y = 9∗10^10 N/m^2) A transverse periodic wave on a string with a mass density of 0.200 kg/m is described by the following [...]
A transverse periodic wave on a string with a mass density of 0.200 kg/m is described by the following equation y=0.05sin(420t−21.0x), where x and y are in meters and t is in seconds. Tension in the string is
26
Jun
A transverse periodic wave on a string with a mass density of 0.200 kg/m is described by the following equation y=0.05sin(420t−21.0x), where x and y are in meters and t is in seconds. Tension in the string is A transverse periodic wave on a string with a mass density of 0.200 kg/m is described by [...]
The angle of incidence for an equilateral prism is 60 degree. What should be the refractive index of prism so that the ray is parallel to the base inside the prism ?
26
Jun
The angle of incidence for an equilateral prism is 60 degree. What should be the refractive index of prism so that the ray is parallel to the base inside the prism ? The angle of incidence for an equilateral prism is 60 degree. What should be the refractive index of prism so that the ray [...]
A point object is placed at a distance of 25 cm from a convex lens of focal length 20 cm. If a glass slab of thickness t and refractive index 1.5 is inserted between the lens and the object, the image is formed at infinity. The thickness t is
26
Jun
A point object is placed at a distance of 25 cm from a convex lens of focal length 20 cm. If a glass slab of thickness t and refractive index 1.5 is inserted between the lens and the object, the image is formed at infinity. The thickness t is A point object is placed at [...]
Parallel beam of light is incident on a system of two convex lenses of focal lengths f1 = 20 cm and f2 = 10 cm. What should be the distance between the two lenses so that rays after refraction from both lenses get undeviated?
26
Jun
Parallel beam of light is incident on a system of two convex lenses of focal lengths f1 = 20 cm and f2 = 10 cm. What should be the distance between the two lenses so that rays after refraction from both lenses get undeviated? A hallow convex lens of glass will behave like a June [...]
A concave lens forms the image of an object such that the distance between the object and image is 10 cm and the magnification produced is 1/4. The focal length of the lens will be
26
Jun
A concave lens forms the image of an object such that the distance between the object and image is 10 cm and the magnification produced is 1/4. The focal length of the lens will be A concave lens forms the image of an object such that the distance between the object and image is 10 [...]
The magnification of an object placed in front of a convex lens of focal length 20 cm is + 2. To obtain a magnification of -2, the object has to be moved a distance equal to:
26
Jun
The magnification of an object placed in front of a convex lens of focal length 20 cm is + 2. To obtain a magnification of -2, the object has to be moved a distance equal to: The magnification of an object placed in front of a convex lens of focal length 20 cm is + [...]
A ray of light undergoes deviation of 30∘ when incident on an equilateral prism of refractive index root2 . The angle made by the ray inside the prism with the base of the prism is
26
Jun
A ray of light undergoes deviation of 30∘ when incident on an equilateral prism of refractive index root2 . The angle made by the ray inside the prism with the base of the prism is A ray of light undergoes deviation of 30∘ when incident on an equilateral prism of refractive index root2 . The [...]
A plane mirror is made of glass slab (u_(g)=1.5) 2.5 cm thick and silvered on back. A point object is placed 5 cm in front of the unsilvered face of the mirror. What will be the position of final image ?
26
Jun
A plane mirror is made of glass slab (u_(g)=1.5) 2.5 cm thick and silvered on back. A point object is placed 5 cm in front of the unsilvered face of the mirror. What will be the position of final image ? Figure shows the graph of angle of deviation delta versus angle of incidence i [...]