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A man of mass m starts moving w.r.t. a platform of mass 2 m with a velocity mu = 9/13 m/s as shown in figure. The platform is fitted with concave mirror of focal length f. The velocity
07
Oct
A man of mass m starts moving w.r.t. a platform of mass 2 m with a velocity mu = 9/13 m/s as shown in figure. The platform is fitted with concave mirror of focal length f. The velocity A man of mass m starts moving w.r.t. a platform of mass 2 m with a velocity [...]
A prism of refractive index root 2 has a refracting angle of 30. One of the refracting surfaces of the prism is polished. For the beam of monochromatic light to retrace its path, find the
07
Oct
A prism of refractive index root 2 has a refracting angle of 30. One of the refracting surfaces of the prism is polished. For the beam of monochromatic light to retrace its path, find the A prism of refractive index root 2 has a refracting angle of 30. One of the refracting surfaces of the [...]
An opaque cylindrical tank with an open has a diameter of 3.00 m and is completely filled with water. When the setting sun reaches an angle of 37 above the horizon, sunlight ceases to illuminate
07
Oct
An opaque cylindrical tank with an open has a diameter of 3.00 m and is completely filled with water. When the setting sun reaches an angle of 37 above the horizon, sunlight ceases to illuminate An opaque cylindrical tank with an open has a diameter of 3.00 m and is completely filled with water. When [...]
A point object is placed 33 cm from a convex mirror which curvature radius 40 cm. A glass plate of thickness 6 cm and index 2.0 is placed between the object and the mirror, closer to the mirror.
07
Oct
A point object is placed 33 cm from a convex mirror which curvature radius 40 cm. A glass plate of thickness 6 cm and index 2.0 is placed between the object and the mirror, closer to the mirror. A point object is placed 33 cm from a convex mirror which curvature radius 40 cm. A [...]
A direct-vision prism is made out of three prisms, each with a refracting angle of theta = 60, attached at each other as shown in figure. Light of a certain wavelength is incident on the first prism.
07
Oct
A direct-vision prism is made out of three prisms, each with a refracting angle of theta = 60, attached at each other as shown in figure. Light of a certain wavelength is incident on the first prism. A direct-vision prism is made out of three prisms attached at each other as shown in figure. Light [...]
Refractive index of the glass slab is 1.5. There is a point object O inside the slab as shown. To eye E1 object appears at a distance of 6 cm (from the top surface) and to eye E2 it appears at a distance
07
Oct
Refractive index of the glass slab is 1.5. There is a point object O inside the slab as shown. To eye E1 object appears at a distance of 6 cm (from the top surface) and to eye E2 it appears at a distance in column 1 match the following two columns. types of the image [...]
A point source of light S is placed at a distance 10 cm in front of the centre of mirror of width 20 cm suspended vertically on a wall. An insect walks with a speed 10 cm/s in front of the mirror
07
Oct
A point source of light S is placed at a distance 10 cm in front of the centre of mirror of width 20 cm suspended vertically on a wall. An insect walks with a speed 10 cm/s in front of the mirror A point source of light S is placed at a distance 10 cm [...]
What is the velocity ( in cm/s) of image in situation shown in figure ( O = object, f = focal length ) ? Object moves with velocity 10 cm/s and mirror moves with velocity 2 cm/s as shown.
07
Oct
What is the velocity ( in cm/s) of image in situation shown in figure ( O = object, f = focal length ) ? Object moves with velocity 10 cm/s and mirror moves with velocity 2 cm/s as shown. f = focal length ) ? Object moves with velocity 10 cm/s and mirror moves with [...]
Find: (v) 3 by 2 1/3 (vi) 5 by 3 4/7
07
Oct
Find: (v) 3 by 2 1/3 (vi) 5 by 3 4/7 Find: (v) 3 by 2 1/3 (vi) 5 by 3 4/7 October 7, 2020 Category: Chapter 2 - Fraction and Decimals , Maths , NCERT Class 7 ,
A container of uniform cross-section has a height of 14 m. Up to what height ( in metre ) water of refractive index 4/3 should be filled inside the container so that container seems to be half
07
Oct
A container of uniform cross-section has a height of 14 m. Up to what height ( in metre ) water of refractive index 4/3 should be filled inside the container so that container seems to be half A container of uniform cross-section has a height of 14 m. Up to what height ( in metre [...]