JEE Mains Physics 2002-2019 Solved Video Solutions
An electron of mass m and a photon have same energy E. The ratio of wavelength of electron to that of photon is : (c being the velocity of light)
28
Sep
An electron of mass m and a photon have same energy E. The ratio of wavelength of electron to that of photon is : (c being the velocity of light) An electron of mass m and a photon have same energy E. The ratio of wavelength of electron to that of photon is : (c [...]
A solid disc of radius ‘a’ and mass ‘m’ rolls down without slipping on an inclined plane making an angle θ with the horizontal. The acceleration of the disc will be 2/b g sin θ where b is ………. (Round off to the Nearest Integer) (g = acceleration due to gravity) (θ = angle as shown in figure)
28
Sep
A solid disc of radius ‘a’ and mass ‘m’ rolls down without slipping on an inclined plane making an angle θ with the horizontal. The acceleration of the disc will be 2/b g sin θ where b is ………. (Round off to the Nearest Integer) (g = acceleration due to gravity) (θ = angle as [...]
A polyatomic ideal gas has 24 vibrational modes. What is the value of y ?
28
Sep
A polyatomic ideal gas has 24 vibrational modes. What is the value of y ? A polyatomic ideal gas has 24 vibrational modes. What is the value of y ? September 28, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
For an ideal heat engine, the temperature of the source is 127°C. In order to have 60% efficiency the temperature of the sink should be ……….°C. (Round off to the Nearest Integer)
28
Sep
For an ideal heat engine, the temperature of the source is 127°C. In order to have 60% efficiency the temperature of the sink should be ……….°C. (Round off to the Nearest Integer) For an ideal heat engine the temperature of the source is 127°C. In order to have 60% efficiency the temperature of the sink [...]
When two soap bubbles of radii a and b (b > a) coalesce, the radius of curvature of common surface is :
28
Sep
When two soap bubbles of radii a and b (b > a) coalesce, the radius of curvature of common surface is : the radius of curvature of common surface is : When two soap bubbles of radii a and b (b > a) coalesce September 28, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions [...]
If an electron is moving in the nth orbit of the hydrogen atom, then its velocity (vn) for the nth orbit is given as :
28
Sep
If an electron is moving in the nth orbit of the hydrogen atom, then its velocity (vn) for the nth orbit is given as : If an electron is moving in the nth orbit of the hydrogen atom then its velocity (vn) for the nth orbit is given as : September 28, 2021 Category: JEE [...]
A closed organ pipe of length L and an open organ pipe contain gases of densities ρ1 and ρ2 respectively. The compressibility of gases are equal in both the pipes. Both the pipes are vibrating in their first overtone with same frequency. The length of the open pipe is x/3L root P1/P2 where x is ………
28
Sep
A closed organ pipe of length L and an open organ pipe contain gases of densities ρ1 and ρ2 respectively. The compressibility of gases are equal in both the pipes. Both the pipes are vibrating in their first overtone with same frequency. The length of the open pipe is x/3L root P1/P2 where x is [...]
A body of mass 2kg moves under a force of (2i^+3j^+5k^)N. It starts from rest and was at the origin initially. After 4s, its new coordinates are (8, b, 20). The value of b is………… (Round off to the Nearest Integer)
28
Sep
A body of mass 2kg moves under a force of (2i^+3j^+5k^)N. It starts from rest and was at the origin initially. After 4s, its new coordinates are (8, b, 20). The value of b is………… (Round off to the Nearest Integer) 20). The value of b is............ (Round off to the Nearest Integer) A body [...]
A swimmer can swim with velocity of 12 km/h in still water. Water flowing in a river has velocity 6 km/h. The direction with respect to the direction of flow of river water he should swim in order to reach the point on the other bank just opposite to his starting point is………………°. (Round off to the Nearest Integer) (find the angle in degree)
28
Sep
A swimmer can swim with velocity of 12 km/h in still water. Water flowing in a river has velocity 6 km/h. The direction with respect to the direction of flow of river water he should swim in order to reach the point on the other bank just opposite to his starting point is………………°. (Round off [...]
If one wants to remove all the mass of the earth to infinity in order to break it up completely. The amount of energy that needs to be supplied will be x/5 GM^2/R where x is …….. (Round off to the Nearest Integer) (M is the mass of earth, R is the radius of earth, G is the gravitational constant)
28
Sep
If one wants to remove all the mass of the earth to infinity in order to break it up completely. The amount of energy that needs to be supplied will be x/5 GM^2/R where x is …….. (Round off to the Nearest Integer) (M is the mass of earth, R is the radius of earth, [...]