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WBJEE Physics Test - 11 - JEE MCQ


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30 Questions MCQ Test WBJEE Sample Papers, Section Wise & Full Mock Tests 2025 - WBJEE Physics Test - 11

WBJEE Physics Test - 11 for JEE 2024 is part of WBJEE Sample Papers, Section Wise & Full Mock Tests 2025 preparation. The WBJEE Physics Test - 11 questions and answers have been prepared according to the JEE exam syllabus.The WBJEE Physics Test - 11 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for WBJEE Physics Test - 11 below.
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WBJEE Physics Test - 11 - Question 1

The velocity of helium nucleus travelling in curved path in a magnetic field is v. The velocity of proton moving in the same curved path, in the same magnetic field is

WBJEE Physics Test - 11 - Question 2

Two cells A and B are connected in the secondary circuit of a potentiometer one at a time and the balancing length are respectively 400cm and 440cm. The e.m.f of the cell A is 1.08 volt. The e.m.f of the second cell B in volts is

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WBJEE Physics Test - 11 - Question 3

If potential V=100 0.5 Volt and current I = 10 0.2 amp are given to us. Then what will be the value of resistance

WBJEE Physics Test - 11 - Question 4

A particle of mass 0.3 kg is subjected to a force F = -kx with k = 15 N-m-1. What will be its initial acceleration, if it is released from a point 20 cm away from the origin?

Detailed Solution for WBJEE Physics Test - 11 - Question 4

F = -kx = - 15 x0.2 = -3 N
Therefore

WBJEE Physics Test - 11 - Question 5

The number of turns in the primary coil of a transformer is 200 and the number of turns in secondary coil is 10. If 240 V a.c. is applied to the primary, the output from secondary will be

WBJEE Physics Test - 11 - Question 6

On stretching a wire, the elastic energy stored per unit volume is

WBJEE Physics Test - 11 - Question 7

Charges   are placed at the four corners of a square of side 1m. The potential at the centre of the square is

WBJEE Physics Test - 11 - Question 8

A parallel plate capacitor of capacity C0 is charged to a potential V 0 .
A) The energy stored in the capacitor when the battery is disconnected and the plate separation is doubled is E1.
B) The energy stored in the capacitor when the charging battery is kept connected and the separation between the capacitor plates is doubled is E2. Then value is

WBJEE Physics Test - 11 - Question 9

The escape velocity of an object from the earth depends upon the mass of the earth (M), its mean density (ρ),its radius (R) and gravitational constant (G). Thus the formula for escape velocity is

WBJEE Physics Test - 11 - Question 10

The magnetic field near a current carrying conductor is given by

WBJEE Physics Test - 11 - Question 11

A current carrying straight wire is kept along the axis of a circular loop carrying a current. The straight wire

WBJEE Physics Test - 11 - Question 12

A magnetic needle suspended by a silk thread is vibrating in the earth's magnetic field. If the temperature of the needle is increased by 700�C, then

WBJEE Physics Test - 11 - Question 13

If the radius of a soap bubble is four times that of another, then the ratio of their pressures will be

WBJEE Physics Test - 11 - Question 14

The average velocity of a body moving with uniform acceleration travelling a distance of 3.06 m is 0.34 ms⁻1. If the change in velocity of the body is 0.18 ms⁻1 during this time, its uniform acceleration is

WBJEE Physics Test - 11 - Question 15

The vector quantity among the following is

WBJEE Physics Test - 11 - Question 16

A bullet is fired from a canon with velocity 500 m/s. If the angle of projection is 15º and g = 10 m/s2. Then the range is

WBJEE Physics Test - 11 - Question 17

Nuclear fusion occur in

WBJEE Physics Test - 11 - Question 18

In a simple harmonic motion displacement is half of its amplitude, what will be the ratio of K.E. and P.E.

WBJEE Physics Test - 11 - Question 19

Two simple harmonic motions act on a particle. These harmonic motions are x=A cos (ωt+δ);y =A cos (ωt+α) when δ=α+π/2, the resulting motion is

WBJEE Physics Test - 11 - Question 20

The spectrum obtained from a sodium vapour lamp is an example for

WBJEE Physics Test - 11 - Question 21

A particle of mass m is rotating in a plane in circular path of radius r. Its angular momentum is L. The centripetal force acting on the particle is

WBJEE Physics Test - 11 - Question 22

The angular velocity of second's hand of a watch is

Detailed Solution for WBJEE Physics Test - 11 - Question 22

The angular velocity is independent of the clock size, however for larger clocks the linear velocity of the pointers at the end of the hands will be greater.
The second hand goes through 2π radians in 1 min,
or 2π radian/60 seconds,
So, ω rad.s-1 = 0.105 rad/s

WBJEE Physics Test - 11 - Question 23

In semi-conductor with the increase in temperature its resistance

WBJEE Physics Test - 11 - Question 24

In a P-N junction diode

WBJEE Physics Test - 11 - Question 25

540 g of ice at 0ºC is mixed with 540 g of water at 80ºC. The final temp. of the mixture in ºC will be

WBJEE Physics Test - 11 - Question 26

The ratio of the slopes of P-V diagrams of adibatic and isothermal processes is

WBJEE Physics Test - 11 - Question 27

Raman got Nobel prize in Physics for

WBJEE Physics Test - 11 - Question 28

A body of mass 2 kg makes an elastic collision with another body at rest and continues to move in the original direction with one fourth of its original speed. The mass of the second body which collides with the first body is

WBJEE Physics Test - 11 - Question 29

When a source of light is receding away from an observer, then the spectral lines will get displaced towards

WBJEE Physics Test - 11 - Question 30

A planet in a distant solar system is 10 times more massive than the earth and its radius is 10 times smaller . Given that the escape velocity from the earth is 11 kms⁻1, the escape velocity from the surface of the planet would be

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