Cengage NEET by C.P Singh
A plane mirror reflects a pencil of light to form a real image. Then the pencil of light incident on the mirror is
29
Oct
A plane mirror reflects a pencil of light to form a real image. Then the pencil of light incident on the mirror is A plane mirror reflects a pencil of light to form a real image. Then the pencil of light incident on the mirror is October 29, 2020 Category: Cengage NEET by C.P Singh [...]
A man is 180cm tall and his eyes are 10cm below the top of his head. In order to see his entire height right from toe to head, he uses a plane mirror kept at a distance of 1m from him. The minimum length of the plane mirror required is :
29
Oct
A man is 180cm tall and his eyes are 10cm below the top of his head. In order to see his entire height right from toe to head, he uses a plane mirror kept at a distance of 1m from him. The minimum length of the plane mirror required is : A man is 180cm [...]
Figure shows two rays A and B being reflected by a mirror and going as ‘A’ and ‘B’. The mirror
29
Oct
Figure shows two rays A and B being reflected by a mirror and going as ‘A’ and ‘B’. The mirror Figure shows two rays A and B being reflected by a mirror and going as 'A' and 'B'. The mirror October 29, 2020 Category: Cengage NEET by C.P Singh , Chapter 16 - Reflection of [...]
The light reflected by a plane mirror may form a real image.
29
Oct
The light reflected by a plane mirror may form a real image. The light reflected by a plane mirror may form a real image. October 29, 2020 Category: Cengage NEET by C.P Singh , Chapter 16 - Reflection of Light , Part 2 ,
Ray optics is valid when characteristic dimensions are
29
Oct
Ray optics is valid when characteristic dimensions are Ray optics is valid when characteristic dimensions are October 29, 2020 Category: Cengage NEET by C.P Singh , Chapter 16 - Reflection of Light , Part 2 ,
Ship A is sailing towards north-east with velocity vector v = 30 i + 50 j km/hr where i points east and j north. Ship B is at a distance of 80 km east and 150 km north of Ship A and is sailing towards west at 10 km/hr. A will be at minimum distance from B in
23
Oct
Ship A is sailing towards north-east with velocity vector v = 30 i + 50 j km/hr where i points east and j north. Ship B is at a distance of 80 km east and 150 km north of Ship A and is sailing towards west at 10 km/hr. A will be at minimum distance [...]
A disc is rolling (without slipping) on a horizontal surface. C is its center and Q and P are two points equidistant from C. Let VP,VQ and VC be the magnitude of velocities of points P,Q and C respectively, then
23
Oct
A disc is rolling (without slipping) on a horizontal surface. C is its center and Q and P are two points equidistant from C. Let VP,VQ and VC be the magnitude of velocities of points P,Q and C respectively, then A disc is rolling (without slipping) on a horizontal surface. C is its center and [...]
A solid disc rolls clockwise without slipping over a horizontal path with a constant speed v, Then the magnitude of the velocities of points A,B and C with respect to a standing observer are respectively.
23
Oct
A solid disc rolls clockwise without slipping over a horizontal path with a constant speed v, Then the magnitude of the velocities of points A,B and C with respect to a standing observer are respectively. A solid disc rolls clockwise without slipping over a horizontal path with a constant speed v B and C with [...]
A constant external torque τ acts for a very brief period Δt on a rotating system having moment of inertia I. (i) The angular momentum of the system will change by τΔt (ii) The angular velocity of the system will change by (τΔt)/I. (iii) If the system was initially at rest, it will acquire rotational kinetic energy (τΔt)^2/2I. (iv) The kinetic energy of the system will change by (τΔt)^2I.
23
Oct
A constant external torque τ acts for a very brief period Δt on a rotating system having moment of inertia I. (i) The angular momentum of the system will change by τΔt (ii) The angular velocity of the system will change by (τΔt)/I. (iii) If the system was initially at rest, it will acquire rotational [...]
A thin rod of mass m and length 2L is made to rotate about an axis passing through its center and perpendicular to it. If its angular velocity changes from 0 to ω in time t, the torque acting on it is
23
Oct
A thin rod of mass m and length 2L is made to rotate about an axis passing through its center and perpendicular to it. If its angular velocity changes from 0 to ω in time t, the torque acting on it is A thin rod of mass m and length 2L is made to rotate [...]