Practice Set 1
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, [...]
In a parallel plate capacitor set up, the plate area of capacitor is 2 m^2 and the plates are separated by 1m. If the space between the plates are filled with a dielectric material of thickness 0.5 m and area 2m^2 (see fig.) the capacitance of the set-up will be ……….. ε0. (Dielectric constant of the material = 3.2) (Round off to the Nearest Integer)
28
Sep
In a parallel plate capacitor set up, the plate area of capacitor is 2 m^2 and the plates are separated by 1m. If the space between the plates are filled with a dielectric material of thickness 0.5 m and area 2m^2 (see fig.) the capacitance of the set-up will be ……….. ε0. (Dielectric constant of [...]
The energy dissipated by a resistor is 10 mJ in 1s when an electric current of 2 mA flows through it. The resistance is ………… Ω. (Round off to the Nearest Integer)
28
Sep
The energy dissipated by a resistor is 10 mJ in 1s when an electric current of 2 mA flows through it. The resistance is ………… Ω. (Round off to the Nearest Integer) The energy dissipated by a resistor is 10 mJ in 1s when an electric current of 2 mA flows through it. The resistance [...]
Red light differs from blue light as they have:
28
Sep
Red light differs from blue light as they have: Red light differs from blue light as they have: September 28, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes.
28
Sep
Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes. Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes. September 28, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
The magnetic field in a region is given by → B = B 0 ( x a ) ^ k . A square loop of side d is placed with its edges along the x and y axes. The loop is moved with a constant velocity → v = v 0 ^ i. The emf induced in the loop is :
28
Sep
The magnetic field in a region is given by → B = B 0 ( x a ) ^ k . A square loop of side d is placed with its edges along the x and y axes. The loop is moved with a constant velocity → v = v 0 ^ i. The emf [...]
Statement I : A cyclist is moving on an unbanked road with a speed of 7 kmh–1 and takes a sharp circular turn along a path of radius of 2m without reducing the speed. The static friction coefficient is 0.2. The cyclist will not slip and pass the curve(g = 9.8 m/s^2) Statement II : If the road is banked at an angle of 45°, cyclist can cross the curve of 2m radius with the speed of 18.5 kmh^–1 without slipping. In the light of the above statements, choose the correct answer from the options given below.
28
Sep
Statement I : A cyclist is moving on an unbanked road with a speed of 7 kmh–1 and takes a sharp circular turn along a path of radius of 2m without reducing the speed. The static friction coefficient is 0.2. The cyclist will not slip and pass the curve(g = 9.8 m/s^2) Statement II : [...]
A resistor develops 500 J of thermal energy in 20s when a current of 1.5 A is passed through it. If the current is increased from 1.5 A to 3A, what will be the energy developed in 20 s.
28
Sep
A resistor develops 500 J of thermal energy in 20s when a current of 1.5 A is passed through it. If the current is increased from 1.5 A to 3A, what will be the energy developed in 20 s. A resistor develops 500 J of thermal energy in 20s when a current of 1.5 A [...]