Education 299 Questions Ask question Search Order By: ActiveTagClear Filter 1 Votes 1 Ans A uniform rod of length 200 cm and mass 500 g is balanced on a wedge placed at 40 cm mark. A mass of 2 kg is suspended from the rod at 20 cm and another unknown mass ‘m’ is suspended from the rod at 160 cm mark as shown in the figure. Find the value of ‘m’ such that the rod is in equilibrium. 120 viewsAditya Bhatt Answered question 17 February 2024EducationPhysics 1 Votes 1 Ans Twenty seven drops of same size are charged at 200 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop. (1) 660 V (2) 1320 V (3) 1520 V (4) 1980 V 125 viewsAditya Bhatt Answered question 17 February 2024EducationPhysics 1 Votes 1 Ans A uniform conducting wire of length 12a and resistance R is wound up as a current carrying coil in the shape of, (i) an equilateral triangle of side ‘a’. (ii) a square of side ‘a’. The magnetic dipole moments of the coil in each case respectively are 109 viewsAditya Bhatt Answered question 17 February 2024EducationPhysics 1 Votes 1 Ans A ball of mass is dropped from a height 10 m, strikes the ground and rebounds to the same height. The magnitude of impulse imparted to the ball is nearly (1) 0 kg m/s (2) 4.2 kg m/s (3) 2.1 kg m/s (4) 1.4 kg m/s 113 viewsAditya Bhatt Answered question 17 February 2024EducationPhysics 1 Votes 1 Ans A particle moving in a circle of radius R with a uniform speed takes a time T to complete one revolution. If this particle were projected with the same speed at an angle ‘θ’ to the horizontal, the maximum height attained by it equals 4R. The angle of projection, θ, is then given by : 117 viewsAditya Bhatt Answered question 15 February 2024EducationPhysics 1 Votes 1 Ans A particle of mass m is projected with a velocity v = kVe (k < 1) from the surface of the earth. (Ve = escape velocity) The maximum height above the surface reached by the particle is 110 viewsAditya Bhatt Answered question 15 February 2024EducationPhysics 1 Votes 1 Ans A series LCR circuit containing 5 H inductor 80μF capacitor and 40 Ω resistor is connected to 230V variable frequency AC source. The angular frequencies of the source at which power transferred to the circuit is half the power at the resonant angular frequency are likely to be (1) 25 rad/s and 75 rad/s (2) 50 rad/s and 25 rad/s (3) 46 rad/s and 54 rad/s (4) 42 rad/s and 58 rad/s 105 viewsAditya Bhatt Answered question 15 February 2024EducationPhysics 1 Votes 1 Ans A series LCR circuit containing 5 H inductor 80μF capacitor and 40 Ω resistor is connected to 230V variable frequency AC source. The angular frequencies of the source at which power transferred to the circuit is half the power at the resonant angular frequency are likely to be (1) 25 rad/s and 75 rad/s (2) 50 rad/s and 25 rad/s (3) 46 rad/s and 54 rad/s (4) 42 rad/s and 58 rad/s 113 viewsAditya Bhatt Answered question 15 February 2024EducationPhysics 1 Votes 1 Ans For the given circuit the input digital signals are applied at the terminals A, B and C. What would be the output at the terminal y? 100 viewsAditya Bhatt Answered question 15 February 2024EducationPhysics 1 Votes 1 Ans A point object is placed at a distance of 60 cm from a convex lens of focal length 30 cm. If a plane mirror were put perpendicular to the principal axis of the lens and at a distance of 40 cm from it, the final image would be formed at a distance of (1) 20 cm from the lens, it would be a real image (2) 30 cm from the lens, it would be a real image (3) 30 cm from the plane mirror, it would be a virtual image (4) 20 cm from the plane mirror, it would be a virtual image 104 viewsAditya Bhatt Answered question 15 February 2024EducationPhysics 1 Votes 1 Ans The electric field due to a short electric dipole at a large distance (r) from the center of the dipole on the equatorial plane varies with distance as 108 viewsAditya Bhatt Changed status to publish 15 February 2024EducationPhysics 0 Votes 1 Ans The refractive index of a transparent liquid filled in an equilateral hollow prism is √2. The angle of minimum deviation for the liquid will be____. 98 viewsAditya Bhatt Changed status to publish 15 February 2024EducationPhysics 1 Votes 1 Ans A spherically symmetric charge distribution is considered with charge density varying as 112 viewsAditya Bhatt Changed status to publish 15 February 2024EducationPhysics 1 Votes 1 Ans If speed V area A and force F are chosen as fundamental units, then the dimension of Young’s modulus will be 120 viewsAditya Bhatt Changed status to publish 15 February 2024EducationPhysics 0 Votes 1 Ans A satellite is orbiting just above the surface of the earth with period T. If d is the density of the earth and G is the universal constant of gravitation, the quantity represents 116 viewsAditya Bhatt Changed status to publish 15 February 2024EducationPhysics 0 Votes 1 Ans Two stars radiate maximum energy at wavelengths 3.6 × 10-7m and 4.8 × 10-7m respectively. What is the ratio of their temperature 113 viewsAditya Bhatt Changed status to publish 15 February 2024EducationPhysics 0 Votes 1 Ans An inductor of inductance L a capacitor of capacitance C and a resistor of resistance R are connected in series to an ac source of potential difference ‘V’ volts as shown in figure. Potential difference across L, C and R is 40 V, 10 V and 40 V, respectively. The amplitude of current flowing through LCR series circuit is . The impedance of the circuit is 137 viewsAditya Bhatt Changed status to publish 15 February 2024EducationPhysics 1 Votes 1 Ans Two conducting circular loops of radii R1 and R2 are placed in the same plane with their centres coinciding. If R1 > > R2, the mutual inductance M between them will be directly proportional to 113 viewsAditya Bhatt Answered question 15 February 2024EducationPhysics 1 Votes 1 Ans The escape velocity from the Earth surface is v. The escape velocity from the surface of another planet having a radius, four times that of Earth and same mass density is (1) v (2) 2v (3) 3v (4) 4v 112 viewsAditya Bhatt Answered question 15 February 2024EducationPhysics 1 Votes 1 Ans An electromagnetic wave of wavelength λ is incident on a photosensitive surface of negligible work function. If ‘m’ mass is of photoelectron emitted from the surface has de-Broglie wavelength , then 110 viewsAditya Bhatt Answered question 15 February 2024EducationPhysics « Previous 1 2 3 4 5 6 7 … 14 15 Next »
