KEAM Paper 1 Mock Test - 6 - JEE MCQ

Resistance of a coli is 4.2 Ω at 100ºC and the temperature coefficient of resistance of its material is 0.004/ºC. Then its resistance at 0ºC is

In a discharge tube at 0.02 mm, there is formation of

The approximated wavelength of a photon of energy 2.48eV is

According to Maxwell's hypothesis, a changing electric field gives rise to

Two charged spheres separated by a distance 'd' exert some force (F) on each other. If they are immersed in a liquid of dielectric constant 4, then what is the force exerted, if all other conditions are same?

Two capacitors of capacitances 3 μF and 6 μF are charged to a potential of 12 V each. They are now connected to each other, with the positive plate of each joined to the negative plate of the other. The potential difference across each capacitor will be

The orbital velocity a satellite near the surface of the earth is 7 km-s⁻¹. If radius of the orbit is 4 times the radius of earth, then its orbital velocity will be

If the value of g at the surface of the earth is 9.8 m/sec², then the value of g at a place 480 km above the surface of the earth will be

On increasing the temperature of a substance gradually, which of the following colours will be noticed by you

When a bus suddenly takes a bend, the passengers are thrown in the outward direction, due to

Heat travels through vacuum by

A moving charge will gain energy due to the application of

For a moving body at any instant of time

A particle is viberating in a simple harmonic motion with an amplitude of 4 cm. At what displacement from the equilibrium position, is its energy half potential and kinetic ?

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): The combination Y = sinωt + cos 2ωt is not a simple harmonic function even though it is periodic.
Reason(R): All periodic functions satisfy the relation

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): The equation y = x + t cannot be true, where x, y are distance and t is time.
Reason(R) : Quantities with different dimensions cannot be added.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): P-T graphs of all gases at low density meet at only one point called absolute zero.
Reason(R): Absolute zero is less than 0ºC in a celsius scale.

According to kinetic theory of gases the absolute temperature of a gas is directly related to the average of

A glass rod is dipped in mercury and withdrawn out, the mercury does not wet the rod because

While viewing a distant object with a telescope, suddenly a housefly sits on objective lens. The correct statement is that

To move a body in a circle, which of the following force is needed?

A long spring when stretched by 'x' cm has a potantial energy V. On increasing the stretching to 'nx' cm the potential energy stroed in the spring will be

To hear an echo, the reflecting surface must be at a minimum distance of

For an adiabatic expansion of a perfect monoatomic gas, when volume increases by 24%, what is the percentage decrease in pressure?

A water fall is 84 meters high. If half of the potential energy of the falling water gets converted to heat, the rise in temperature of water will be

If a star is moving towards earth, then the lines are shifted towards

The position of a particle at time 't' is given by the equation . Where V₀ is constant and A > 0. Dimensions of V₀ and A respectively are