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Test: BITSAT Mock Test- 12 - JEE MCQ


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150 Questions MCQ Test - Test: BITSAT Mock Test- 12

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Test: BITSAT Mock Test- 12 - Question 1

In a full wave rectification, if the input frequency is 50 Hz, then the output has a frequency of 

Test: BITSAT Mock Test- 12 - Question 2

In any Bohr orbit of the hydrogen atom, the ratio of kinetic energy to potential energy of the electron is

Test: BITSAT Mock Test- 12 - Question 3

When X-rays pass through a strong uniform magnetic field, then they

Test: BITSAT Mock Test- 12 - Question 4
A student has 10 resistors of resistance 'r'. The minimum resistance made by him from given resistors is
Test: BITSAT Mock Test- 12 - Question 5
An ammeter reads upto 1A. Its internal resistance is 0.81 . To increases the range to 10A the value of the required shunt is
Test: BITSAT Mock Test- 12 - Question 6
An electron of charge 'e' coulomb passes through a potential difference of V volts. Its energy in 'joules' will be
Test: BITSAT Mock Test- 12 - Question 7
An electron and a proton have same de-Broglie's wavelength. The kinetic energy of an electron is
Test: BITSAT Mock Test- 12 - Question 8
The current passing through a coil of 5 H is decreasing at the rate of 2 A/s. The emf developed in the coil is
Test: BITSAT Mock Test- 12 - Question 9
Two point charges of +4 μC and -6 μC are separated by a distance of 20 cm in air. At what point, on the line joining the two charges from charge +4 μC, the electric potential will be zero?
Test: BITSAT Mock Test- 12 - Question 10
A block is at rest on an inclined plane making an angle α with the horizontal. As the angle α of the incline is increased, the block starts slipping when the angle of inclination becomes θ. The coefficient of static friction between the block and the surface of the inclined plane is or A body starts sliding down at an angle θ to horizontal. Then coefficient of friction is equal to
Test: BITSAT Mock Test- 12 - Question 11
The period of a satellite in a circular orbit of radius R is T, the period of another satellite in a circular orbit of radius 4R is
Test: BITSAT Mock Test- 12 - Question 12
The maximum wavelength of radiation emitted at 2000 K is 4 μm. What will be the maximum wavelength of radiation emitted at 2400 K?
Test: BITSAT Mock Test- 12 - Question 13

A charged particle accelerated through a potential difference of 100V passes through the uniform electric and magnetic fields so as to experience no deflection. E = 15 x 106 V ∕ m and B = 5 x 103 T . The specific charge e/m is