List of top Physics Questions

A body is projected from the ground with a speed 10 m/s at angle 30° with the horizontal. The height of the body after 5 seconds of its projection is (Acceleration due to gravity = 10 m/s²)

For two vectors $ \mathbf{A} $ and $ \mathbf{B} $, if $ \mathbf{A} + \mathbf{B} = |\mathbf{A} - \mathbf{B}| $, then

A body of mass 90 g is connected to a string of 100 cm length and whirled in a horizontal circle. If the string can withstand a tension of 2.25 N, then permissible maximum velocity of the body is

A motor cycle of mass 100 kg is moving with a velocity of 15 m/s on a circular path having radius of curvature 20 m. Then the centrifugal force acting on it is (Acceleration due to gravity = 10 m/s²)

From an elevated point 'A', a stone is projected vertically upwards. The velocity of the stone when it reaches a distance 'h' below 'A' is double its velocity when it was at a height 'h' above 'A'. The greatest height attained by the stone above 'A' is

An ideal gas is in thermodynamic equilibrium. The number of degrees of freedom of a molecule of the gas is 𝑛. The internal energy of one mole of the gas is 𝑈_𝑛 and the speed of sound in the gas is v_𝑛. At a fixed temperature and pressure, which of the following is the correct option?

In list - I some conversions are shown and in the list- II emitted particles are shown. Match the column

	List-I		List- II
(P)	$_{92}^{238}\textrm{U}$ → $_{91}^{234}\textrm{Pa}$	(1)	one α particle and one β⁺ particle
(Q)	$_{82}^{214}\textrm{Pb}$ → $_{82}^{210}\textrm{Pb}$	(2)	Three β^- particle and 1 α particle
(R)	$_{81}^{210}\textrm{Tl}$ → $_{82}^{206}\textrm{Pb}$	(3)	Two β^- particle and 1 α particle
(S)	$_{81}^{228}\textrm{Pa}$→ $_{88}^{224}\textrm{Ra}$	(4)	one α particle and one β^- particle
		(5)	one α particle and two β⁺ particle

Taking the first reflection of M₁. If the final image coincides with s, then find n.

The degree of freedom of an ideal gas is n. The internal energy of 1 mole of the gas is U_n and the speed of sound n the gas is V_n. At a fixed temperature and pressure, which of the following is correct?

A ball is released on a smooth plane as shown. It strikes with the ground, the coefficient of restitution is $\frac{1}{\sqrt{3}}$ Choose the correct options

Find the α, β, γ in the Y = $C^\alpha h^\beta G^\gamma,\,\,$
$\gamma$ = Young's Modulus
$c$ = speed of Light
$h$ = Plank's Constant
$G$ = gravitational Constant

When a force $\overrightarrow F = xy²\hat i + x²y\hat j N$ acts on a particle and moves it along a straight line from the origin to the point (4, 0), the work done is,

The current drawn by the primary coil of an ideal transformer, which steps up 22 V into 220 V, to operate a device having a load resistance of 110 $\Omega$ is:

One volt induced emf is produced in the secondary coil when the current through the primary coil is changed from 3 A to 1 A in 100 milliseconds. The mutual inductance of the two coils is:

A circular loop of area 0.04 m$^2$ carrying a current of 10 A is held with its plane perpendicular to a magnetic field induction of 0.4 T. Then the torque acting on the circular loop is:

A neutron makes a head-on elastic collision with a lead nucleus. The ratio of nuclear mass to neutron mass is 206. The fractional change in kinetic energy of a neutron is:

The force between two electric point charges at rest in air is $ F_1 $. When the same arrangement is kept inside water, the force between them is $ F_2 $. Which of the following statement is correct?

The current passing through the 100$\Omega$ resistor in the given electrical circuit is:

In the photoelectric experiment, the frequency of the incident radiation is double(D) What will be its effect on the photoelectric current?

A battery is made of 12 cells having emf 5 V each. If three cells are unknowingly connected wrong, the resultant emf of the battery will be:

Which of the following statement is true when a gamma decay occurs from the nucleus of an atom?

A drone is flying due west, a little above the train, with a speed of 10 m/s. A 270 meter long train is moving due east at a speed of 20 m/s. The time taken by the drone to cross the train is:

$ F_A, F_B, $ and $ F_C $ are three forces acting at point $ P $ as shown in the figure. The whole system is in equilibrium state. The magnitude of $ F_A $ is:

A hockey player hits the ball at an angle of 37° from the horizontal with an initial speed of 40 m/s (a right-angled triangle with one of the angles being 37° and their sides in the ratio of 6 : 8 : 10). Assume that the ball is in a vertical plane. The time at which the ball reaches the highest point of its path is:

A light having wavelength 6400 $ \text{\AA} $ is incident normally on a slit of width 2 mm. Then the linear width of the central maximum on the screen kept 2 m from the slit is:

	List-I		List- II
(P)	\(_{92}^{238}\textrm{U}\) → \(_{91}^{234}\textrm{Pa}\)	(1)	one α particle and one β⁺ particle
(Q)	\(_{82}^{214}\textrm{Pb}\) → \(_{82}^{210}\textrm{Pb}\)	(2)	Three β^- particle and 1 α particle
(R)	\(_{81}^{210}\textrm{Tl}\) → \(_{82}^{206}\textrm{Pb}\)	(3)	Two β^- particle and 1 α particle
(S)	\(_{81}^{228}\textrm{Pa}\)→ \(_{88}^{224}\textrm{Ra}\)	(4)	one α particle and one β^- particle
		(5)	one α particle and two β⁺ particle