Physics MCQ - IIT JAM MCQ
21 Questions MCQ Test - Physics MCQ
The dimensional formula of capacitance C is (Here M, L, I and T represent mass length, current and temperature respectively)
The sum of the three vectors shown in figure is zero. The magnitude of the vector 
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A particle starts from rest with a constant acceleration. At a time t second, the speed is found to be 100 m/s and one second later the speed becomes 150 m/s. The acceleration a and the distance d travelled during the (t + 1)th second respectively, are
A projectile is fiied with a speed u at an angle θ with the horizontal. Its speed when its direction of motion makes an angle α. with the horizontal is
The force on a particle of mass 10 g is 
If it starts from rest, then its position at time t = 5s is
A block slides down an incline of angle 30° with an acceleration g/4. The kinetic friction coefficient between inclined plane and block is
A particle of mass m is suspended from a ceiling through a string of length L. The particle moves in a horizontal circle of radius r and the string makes angle θ with the vertical. The speed of the particle is
...(i)
A block of mass 2.0 kg is pulled up on a smooth incline of angle 30° with the horizontal. If the block moves with an acceleration of 1.0 m/s2. the average power delivered during the 4.0 s after the motion starts is approximately close to (Take g = 9.8 m/s2)
The optical path of a monochromatic light is the same if it goes through 2 cm of a transparent medium 2.25 cm of water. If the refractive index of water is 1.33, the refractive index of the medium is close to
A uniform circular disc of mass 200 g and radius 4 cm is rotated about one of its diameter at an angular speed of 10 rad/s. The ratio of its kinetic energy to its angular momentum about the axis of rotation is
An infinite current carrying wire passes through point O and is perpendicular to the plane containing a current loop ABCD as shown in the figure. Choose the collect option(s).
the direction of torque is along OO’. Using the right hand thumb rule, the loop will rotate clockwise as seen from O.A proton and an electron are placed in a uniform electric field. Which one of the following statements is/are INCORRECT?
(e is charge on proton)
There is a small hole near the bottom of an open tank filed with a liquid. The speed of the water ejected does not depend on
A wave is represented by the equation y = (0.001 mm) sin[(50s-1)t + (2.0 m-1)x]. Then
(taking +x direction as positive)
Four moles of a radioactive material decays into 0.5 moles in 90 seconds. Then the disintegration constant is equal to ______ x 10-2s-1 (upto two decimal places)
Ultraviolet light of wavelength 350 nm and intensity 1.00 W/m2 is directed at a metal surface of work function 2.2 eV. If 0.50% of the incident photons produce photoelectrons, the number of photo electrons emitted per second, if the metal surface lias an area of 1.00 cm2, is equal to ____ x 1011 photoelectrons/s. (upto one decimal place) (h = 6.626 x 10-34 J s, c = 3 x 108 m/s, 1 eV = 1.6 x 10-19 J)
The maximum wavelength of light which can ionize a hydrogen atom in its ground state is _____ nm. (up to one decimal place.) (Given data: h = 4.14 x 10-15 eVs, c = 3 x 108 m/s, ground state energy of H-atom = -13.6 eV)
A light beam travelling in the x-direction is described by the electric field
The corresponding magnetic field is of the form 
Then the value of n is equal to ____.
An inductor (L = 200 mH) is connected to an AC source of peak emf 210 V and freqeuncy 50 Hz. The value of peak current is _______ A. (up to one decimal place).
A conducting circular loop is placed in a uniform magnetic field B = 0.020 T with its plane perpendicular to the field. The radius of the loop staits shrinking at a constant rate of 1.00 mm/s. The induced emf in the loop, at an instant when the radius is 2 cm, is _____ μV. (up to one decimal place)
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