Engineering Questions

Q.43. K₁ and K₂ be the maximum kinetic energies of photoelectrons emitted from a surface of a given material for the light of wavelength λ₁ and λ₂, respectively. If λ₁ = 2 λ₂, then the work function o

Q.11. If , then the value of is :

Q.27. The charge stored by the capacitor C in the given circuit in the steady state is .......... C. [Figure: Circuit diagram with capacitor]

Q.9. Let the mid points of the sides of a triangle ABC be , and . If its incentre is , then is equal to :

Q.31. An object of uniform density rolls up the curved path with the initial velocity v as shown in the figure. If the maximum height attained by an object is (g = acceleration due to gravity), the o

Q.5. Let be a set of matrices. Then the number of matrices in S, for which the sum of the diagonal elements is equal to 4, is:

Q.6. Let . Then the sum of all elements of the matrix is equal to :

Q.40. Two known resistance of R and 2R and one unknown resistance X are connected in a circuit as shown in the figure. If the equivalent resistance between points A and B in the circuit is X , then

Q.57. Given below are two statements:R = 8.314 J K⁻¹ mol⁻¹ and 1 cal = 4.2 JStatement I: When = 12.6 kcal/mol, the room temperature rate constant is doubled by a 10°C increase in temperature (298 K t

Q.61. The correct statements are: A. Activation energy for enzyme catalysed hydrolysis of sucrose is lower than that of acid catalysed hydrolysis. B. During denaturation, secondary and tertiary struct

Q.61. Which of the following sets includes all the species that will change the orange colour of KCrO in acidic medium ?

Q.50. A tube is filled with water and a wooden cube 10 cm 10cm 10cm is placed in the water. The wooden cube is found to float on the water with a part of it submerged in water. When a metal coin is

Q.54. Consider the following data (i) 2Al(s) + 6HCl(aq) AlCl(aq) + 3H(g) + 1200 kJ/mol. (ii) H(g) + Cl(g) 2HCl(g) + 164 kJ/mol. (iii) HCl(g) + aq HCl(aq) + 83 kJ/mol. (iv) AlCl(s) + aq AlCl(aq) +

Q.18. The area of the region bounded by the curves x + 3y= 0 and x + 4y = 1 is equal to :

Q.58. The electronegativity of a group 13 element 'E' is same as that of Ge (on Pauling scale and upto one decimal point). The CORRECT statements about E are A. It can act as a reducing agent. B. It c

Q.41. Refer the figure given below. and are refractive indices of air and lens material. The height of image will be _______ cm. [Figure: A plano-convex lens with object and image distances].

Q.11. The eccentricity of an ellipse E with centre at the origin O is and its directrices are . Let H: be a hyperbola whose eccentricity is equal to the length of semi-major axis of E, and whose len

Q.1. Let , be the roots of the quadratic equation for some . Then is equal to :

Q.49. When an external resistance of is connected across terminals of a cell, a current of 0.25 A flows through it. When the resistor is replaced by a resistor, a current of 0.5 A flows through it.

Q.14. Let . Then is equal to: