Recent questions tagged jee mains

+2 votes

1 answer

The vector a and vector b are not perpendicular and vector c and vector d are two vectors satisfying,

asked Apr 7, 2019 in JEE by kratos

+2 votes

1 answer

The technique used to transmit audio signals in television broadcasts is :

asked Apr 7, 2019 in Physics by kratos

+1 vote

1 answer

The differential equation of all non-horizontal lines in a plane is (A) d^2y/dx^2 = 0

asked Apr 7, 2019 in JEE by kratos

+3 votes

1 answer

An eccentric person starts writing numbers from 1 to n in a row such that i^th number is written i^2 times. Then find the 500th digit

asked Apr 7, 2019 in JEE by kratos

+1 vote

1 answer

An LED is constructed from a Pn junction based on a certain semi-conducting material with energy gap of 1.55 eV.

asked Apr 7, 2019 in Physics by kratos

+3 votes

1 answer

Assertion : A body of mass 1 kg is moving with an acceleration of 1 ms^–1 The rate of change of its momentum is 1 N.

asked Apr 7, 2019 in JEE by kratos

+1 vote

1 answer

Let f(x) = x^3 – 4x^2 + 8x + 11, if LMVT is applicable on f(x) in [0, 1], value of c is :

asked Apr 7, 2019 in JEE by kratos

+3 votes

1 answer

If sin^ -1 (x/5) +cosec ^-1 (5/4) =π/2 , then the value of x is (a) 4 (b) 5 (c) 1 (d) 3

asked Apr 7, 2019 in JEE by kratos

+2 votes

0 answers

A person can jump 1.2 m on Earth. How high can he jump on a planet whose density is 1/3rd and radius is 4 times that of Earth,

asked Apr 7, 2019 in JEE by kratos

+1 vote

1 answer

5 ***** of PCl5 are heated in a closed vessel of 5 litre capacity. At equilibrium 40% of PCl5 is found to be dissociated.

asked Apr 7, 2019 in JEE by kratos

+2 votes

1 answer

Suppose the amplitude of modulated wave equal to the signal amplitude. Then modulation is

asked Apr 7, 2019 in JEE by kratos

+1 vote

1 answer

Which of the following has the shortest C-Cl bond? (1) Cl–CH=CH–OCH3

asked Apr 7, 2019 in JEE by kratos

+2 votes

1 answer

If angle between asymptote of hyperbola (x^2/a^2) – (y^2/b^2) = 1 is 45°. The value of eccentricity is ........

asked Apr 7, 2019 in JEE by kratos

+1 vote

1 answer

A lot contains 20 articles. The probability that the lot contains exactly two defective articles is 0.4;

asked Apr 7, 2019 in Mathematics by kratos

+3 votes

1 answer

In the circuit shown in figure, calculate the following : (i) Potential difference between points‘a’ and ‘b’ when switch ‘*’is open.

asked Apr 7, 2019 in JEE by kratos

+1 vote

1 answer

What is the value of the determinant |(0,2,0),(2,3,4),(4,5,6)|?

asked Apr 7, 2019 in JEE by kratos

+1 vote

1 answer

A force 4i - 3j + 2k passes through the point (–9, 2, 1). Find the component of moment of the force about the axis of reference.

asked Apr 7, 2019 in JEE by kratos

+3 votes

1 answer

An ice cube is floating in water above which a layer of lighter oil is poured. As the ice melts completely,

asked Apr 7, 2019 in JEE by kratos

+2 votes

1 answer

Two coils have a mutual inductance 0.005 H. The current changes in the first coil according to equation

asked Apr 7, 2019 in Class 12 by kratos

+2 votes

1 answer

In air, a lossless transmission line of length 50 cm with L = 10μH/m, C = 40PF/m is operated at 25 MHz.

asked Apr 7, 2019 in JEE by kratos

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