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A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of the combination is
23
Oct
A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of the combination is A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of the combination is October 23, 2020 [...]
In the cube of side ‘a’ shown in the figure, the vector from the central point of the face ABOD to the central point of the face BEFO will be :
23
Oct
In the cube of side ‘a’ shown in the figure, the vector from the central point of the face ABOD to the central point of the face BEFO will be : In the cube of side 'a' shown in the figure the vector from the central point of the face ABOD to the central point [...]
Two guns A and B can fire bullets at speeds 1 km/s and 2 km/s respectively. From a point on a horizontal ground, they are fired in all possible directions. The ratio of maximum areas covered by the bullets on the ground fired by the two guns is
23
Oct
Two guns A and B can fire bullets at speeds 1 km/s and 2 km/s respectively. From a point on a horizontal ground, they are fired in all possible directions. The ratio of maximum areas covered by the bullets on the ground fired by the two guns is they are fired in all possible directions. [...]
In three dimensional system the position co-ordinates of a particle in motion are given below x=a cos wt y=a sinwt and z=awt The velocity of the particle will be
23
Oct
In three dimensional system the position co-ordinates of a particle in motion are given below x=a cos wt y=a sinwt and z=awt The velocity of the particle will be In three dimensional system the position co-ordinates of a particle in motion are given below x=a cos wt y=a sinwt and z=awt The velocity of the [...]
In a car race on straight road, car A takes a times t less than car B at the finish and passes finishing point with a speed ‘v’ more than that of car B. Both the car start from rest and travel with constant acceleration a1 and a2 respectively. Then ‘v’ is equal to
23
Oct
In a car race on straight road, car A takes a times t less than car B at the finish and passes finishing point with a speed ‘v’ more than that of car B. Both the car start from rest and travel with constant acceleration a1 and a2 respectively. Then ‘v’ is equal to find [...]
A particle is moving with velocity v= k (yi+xj),where k is constant. the general equation for its path is
23
Oct
A particle is moving with velocity v= k (yi+xj),where k is constant. the general equation for its path is A particle is moving with velocity v= k (yi+xj) where k is constant. the general equation for its path is October 23, 2020 Category: Chapter 2 - Kinematics , JEE Mains Physics 2002-2019 Solved Video Solutions [...]
A ray of light having wavelength 720 nm enters in a glass of refractive index 1 × 5. The wavelength of the ray within the glass will be
23
Oct
A ray of light having wavelength 720 nm enters in a glass of refractive index 1 × 5. The wavelength of the ray within the glass will be A ray of light having wavelength 720 nm enters in a glass of refractive index 1 × 5. The wavelength of the ray within the glass will [...]
The trajectory of a projectile near the surface of the earth is given as y = 2x – 9x^2 . If it were launched at an angle θ0 with speed v0 then g = 10 ms^–2
23
Oct
The trajectory of a projectile near the surface of the earth is given as y = 2x – 9x^2 . If it were launched at an angle θ0 with speed v0 then g = 10 ms^–2 The trajectory of a projectile near the surface of the earth is given as y = 2x – 9x^2 [...]
A shell is fired from a fixed artillery gun with an initial speed u such that it hits the target on the ground at a distance R from it. If t1 and t2 , are the values of the time taken by it to hit the target in two possible ways, the product t1t2 is:
23
Oct
A shell is fired from a fixed artillery gun with an initial speed u such that it hits the target on the ground at a distance R from it. If t1 and t2 , are the values of the time taken by it to hit the target in two possible ways, the product t1t2 is: [...]
A plane is inclined at an angle α = 30° with respect to the horizontal. A particle is projected with a speed u = 2 ms^–1 from the base of the plane making an angle θ = 15° with respect to the plane as shown in the figure. the distance from the base at which the particle hits the plane is close to :
23
Oct
A plane is inclined at an angle α = 30° with respect to the horizontal. A particle is projected with a speed u = 2 ms^–1 from the base of the plane making an angle θ = 15° with respect to the plane as shown in the figure. the distance from the base at which [...]