The correct match between the entries in table are :
A box weighs 196 N on a spring balance at the north pole. Its weight recorded on the same balance if it is shifted to the equator is close to (Take g = 10 ms^–2 at the north pole and the radius of the earth = 6400 km):
19
Sep
A box weighs 196 N on a spring balance at the north pole. Its weight recorded on the same balance if it is shifted to the equator is close to (Take g = 10 ms^–2 at the north pole and the radius of the earth = 6400 km): The correct match between the entries in [...]
A mass of 10 kg is suspended by a rope of length 4 m, from the ceiling. A force F is applied horizontally at the mid-point of the rope such that the top half of the rope makes an angle of 45° with the vertical. Then F equals: (Take g = 10 ms^–2 and the rope to be massless)
19
Sep
A mass of 10 kg is suspended by a rope of length 4 m, from the ceiling. A force F is applied horizontally at the mid-point of the rope such that the top half of the rope makes an angle of 45° with the vertical. Then F equals: (Take g = 10 ms^–2 and the [...]
A non-isotropic solid metal cube has coefficients of linear expansion as : 5 × 10^–5/°C along the x-axis and 5 × 10^–6/°C along the y and the z-axis. If the coefficient of volume expansion of the solid is C × 10^–16/°C then the value of C is ______.
19
Sep
A non-isotropic solid metal cube has coefficients of linear expansion as : 5 × 10^–5/°C along the x-axis and 5 × 10^–6/°C along the y and the z-axis. If the coefficient of volume expansion of the solid is C × 10^–16/°C then the value of C is ______. The correct match between the entries in [...]
A Carnot engine operates between two reservoirs of temperatures 900 K and 300 K. The engine performs 1200 J of work per cycle. The heat energy (in J) delivered by the engine to the low temperature reservoir, in a cycle, is____
19
Sep
A Carnot engine operates between two reservoirs of temperatures 900 K and 300 K. The engine performs 1200 J of work per cycle. The heat energy (in J) delivered by the engine to the low temperature reservoir, in a cycle, is____ The correct match between the entries in table are : September 19, 2021 Category: [...]
A polarizer – analyser set is adjusted such that the intensity of light coming out of the analyser is just 10% of the original intensity. Assuming that the polarizer – analyser set does not absorb any light, the angle by which the analyser need to be rotated further to reduce the output intensity to be zero, is :
19
Sep
A polarizer – analyser set is adjusted such that the intensity of light coming out of the analyser is just 10% of the original intensity. Assuming that the polarizer – analyser set does not absorb any light, the angle by which the analyser need to be rotated further to reduce the output intensity to be [...]
A parallel plate capacitor has plates of area A separated by distance ‘d’ between them. It is filled with a dielectric which has a dielectric constant that varies as k(x) = K(1 + αx) where ‘x’ is the distance measured from one of the plates. If ( αd)
19
Sep
A parallel plate capacitor has plates of area A separated by distance ‘d’ between them. It is filled with a dielectric which has a dielectric constant that varies as k(x) = K(1 + αx) where ‘x’ is the distance measured from one of the plates. If ( αd) The correct match between the entries in [...]
As shown in the figure, a bob of mass m is tied by a massless string whose other end portion is wound on a flywheel (disc) of radius r and mass m. When released from rest the bob starts falling vertically. When it has covered a distance of h, the angular speed of the wheel will be :
19
Sep
As shown in the figure, a bob of mass m is tied by a massless string whose other end portion is wound on a flywheel (disc) of radius r and mass m. When released from rest the bob starts falling vertically. When it has covered a distance of h, the angular speed of the wheel [...]
Visible light of wavelength 6000 × 10^– 8 cm falls normally on a single slit and produces a diffraction pattern. It is found that the second diffraction minimum is at 60° from the central maximum. If the first minimum is produced at θ1, then θ1 is close to
19
Sep
Visible light of wavelength 6000 × 10^– 8 cm falls normally on a single slit and produces a diffraction pattern. It is found that the second diffraction minimum is at 60° from the central maximum. If the first minimum is produced at θ1, then θ1 is close to The correct match between the entries in [...]
Consider a circular coil of wire carrying constant current I, forming a magnetic dipole. The magnetic flux through an infinite plane that contains the circular coil and excluding the circular coil area is given by ϕi. The magnetic flux through the area of the circular coil area is given by ϕ0. Which of the following option is correct ?
19
Sep
Consider a circular coil of wire carrying constant current I, forming a magnetic dipole. The magnetic flux through an infinite plane that contains the circular coil and excluding the circular coil area is given by ϕi. The magnetic flux through the area of the circular coil area is given by ϕ0. Which of the following [...]
Particle A of mass m1 moving with velocity ( √ 3 ^ i + ^ j ) ms^-1 collides with another particle B of mass m2 which is at rest initially. Let → V1 and V2 be the velocities of particles A and B after collision respectively. If m1 = 2m2 and after collision V1 = ( ^ i + √ 3 ^ j^) ms-1 the angle between V1 and V2 is
19
Sep
Particle A of mass m1 moving with velocity ( √ 3 ^ i + ^ j ) ms^-1 collides with another particle B of mass m2 which is at rest initially. Let → V1 and V2 be the velocities of particles A and B after collision respectively. If m1 = 2m2 and after collision V1 [...]