NEET Physics | Daily MCQs Practice Questions | 15 July 2024 | NEET Exam

The work done in stretching a wire by 0.2 mm is 8 J. What will be the work done in stretching another wire of same material, but with double the radius and half the length by 0.2 mm?

A large open container of negligible mass and uniform cross-sectional area has a small hole of area a in its side wall near the bottom. The container is kept over a smooth horizontal floor and contains a liquid of density ρ. Assuming that the liquid starts flowing through the hole, the acceleration of the container will be (A is area of cross-section of container)

The coefficient of cubical expansion of water is negative between

If γ denotes the ratio of two molar specific heats of a gas, the ratio of slopes of isothermal and adiabatic P-V curves at their point of intersection for the monoatomic gas will be $\left(\gamma =\frac{C_p}{C_v}\right)$

Q = W is true for (symbol have their usual meaning)

The V-I characteristics of a Silicon diode is shown in the figure. The forward resistance of diode, when forward current is 10 mA, will be

Two equal negative charges -q are fixed at the points (0, a) and (0, - a) on the y-axis. A positive charge Q is released from rest from the point (2a, 0) on the x-axis. The charge will

A car turns a corner on a horizontal road at a constant speed of 10 m/s. If the coefficient of friction is 0.5, the minimum radius of the turn (in metre) so that car can turn safely is

Four capacitors are connected in a circuit as shown in figure. The effective capacitance between point A and B will be

A rod of length I slides on two long horizontal rails as shown in the figure. The emf induced between the ends of the rod is

Two electric bulbs whose resistances are in the ratio of 1: 3 are connected in parallel to a constant voltage source. The power dissipated in them has the ratio

A magnetising field of 5000 A/m produces a magnetic flux of 5 x 10^-5 weber in an iron rod. If the area of cross-section of the rod is 0.5 cm² , then permeability of the rod will be (in Sl units)

What are the respective number of α and β-particles emitted in the following radioactive decay?

${}_{90}{}^{200}X \to {}_{82}{}^{172}Y$

The radius of curvature of a convex mirror is 80 cm. When a real object is placed at A its image is formed at B. If the size of image is half that of the object, then distance between A and B is

A transverse wave of amplitude 0.25 m, wavelength 2 m and frequency 4 Hz is propagating in a string along positive x-direction. The equation of this wave is