Physics Test - ...

A particle is performing U.C.M. along the circumference of a circle of diameter 50 cm with frequency 2 Hz, The acceleration of the particle tn m/s²is

A convex lens of focal length ‘f’ is placed In contact with a concave lens of the same focal length. The equivalent focal fengfo of the combination is

The range of an ammeter of resistance ‘G’ can be increased from ‘l’ to ‘nl’ by connecting

When a 12000 joule of work is done on a flywheel, its frequency of rotation increases from 10 Hz to 20 Hz. The moment of inertia of flywheel about its axis of rotation is (π²= 10)

In the given electrical circuit, which one of the following equations is a correct equation?

A lift is tied with thick iron ropes having mass ‘M’. The maximum acceleration of the lit is ‘a’ m/s²and the maximum safe stress is ‘S’ N/m². The minimum diameter of the rope is

An alternating voltage is given by The voltage will be maximum for the first time when is (T = periodic time)

With a resistance of ‘X’ in the left gap and a resistance of 9Ω in the right gap of a meter bridge, the balance point is obtained at 40 cm from the left end.

In what way and to which resistance 3Ω resistance be connected to obtain the balance at 50 cm from the left end

P and Q are two non-zero vectors inclined to each other at an angle ‘θ’. ‘p ’and ‘q ’are unit vectors along P and Q respectively. The component of Q in the direction of P will be

Find the wrong statement from the following about the equation of stationary wave given by Y = 0.04 cos(πx) sin(50 πt) m where t is in second. Then for the stationary wave.

Two light belts are suspended as shown in the figure. When a stream of air passes through foe space between them, foe distance between the balls will

The critical angle for light going from medium ‘x’ to medium ‘y’ is ‘θ’. The speed of light in medium ‘x’ is ‘v_x’ . The speed of Iight in the medium ‘y’ is

A rigid body is rotating with angular velocity ‘ω’ about an axis of rotation. Let ‘v’ be the linear velocity of a particle which is at perpendicular distance ‘r’ from the axis of rotation. Then the rotation ‘v’ = rω Implies that

The maximum wavelength of radiation emitted by a star is 289.8 nm. Then intensity of radiation for the star is (Given: Stefan’s constant = 5.67 x 10^-6Wm^-2K^-4, Wien’s constant, b = 2898p μmK)

In the Balmer series, the wavelength of the first line is ‘λ₁’, and in the Brackett series wavelength of the first line is ‘λ₂’ then λ₁/λ₂is

In frequency modulated wave

The excess of pressure, due to surface tension, on a spherical liquid drop of radius ‘R’ is proportional to