MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions

The resultant `vec"R"` of `vec"P"` and `vec"Q"` is perpendicular to `vec"P"`. Also `|vec"P"|=|vec"R"|`. The angle between `vec"P"` and `vec"Q"` is ______.
[tan 45° = 1]

If `sqrt("A"^2+"B"^2)` represents the magnitude of resultant of two vectors `(vec"A" + vec"B")` and `(vec"A" - vec"B")`, then the angle between two vectors is ______.

The stopping potential of the photoelectrons, from a photo cell is ______.

A green light is incident from the water to the air-water interface at the critical angle (C). Select the correct statement.

For the same angle of incidence, the angle of refraction in four media A, B, C and D are 25°, 30°, 35° and 40° respectively. The speed of light is least in medium ______.

Which one of the following is NOT the correct formula for refractive index of glass w.r.t. air (_aμ_g) (i = angle of incidence, r = angle of refraction)

A particle of mass 'm' having charge 'q' is held at rest in uniform electric field of intensity 'E'. When it is released, the kinetic energy attained by it after covering a distance 'y' will be ______.

Three identical charges are placed on three vertices of a square. If the force acting between q₁ and q₂ is F₁₂ and between q₁ and q₃ is f₁₃ then `"F"_13/"F"_12` = ____________.

For total internal reflection to take place, the angle of inddence i and the refractive index µ of the medium must satisfy the inequality ____________.

The angle of minimum deviation produced by a thin glass prism in air is 'δ'. If that prism is immersed in water, the angle of minimum deviation will be ______.

( _aμ_g = refractive index of glass w.r.t, air _aμ_w = refractive index of water w.r.t. air)

For a ray of light, the critical angle is minimum when it travels from ______.

For a photocell, work function is 'W₀' and stopping potential is 'v'. The wavelength of the incident radiation is (h =Planck's constant, C = velocity of light, e = charge of electron) ____________.

Let a force `vec"F"=-"F"hat"k"` acts on the origin of Cartesian frame of reference. The moment of force about a point (1, -1) will be ______.

Out of the following statements which one is correct?

S₁ and S₂ are the two imaginary surfaces enclosing the charges +q and -q as shown. The electric flux through S₁ and S₂ are respectively ______.

The equations of two waves are given by :
y₁ 5 sin2π (x - vt) cm

y₂ 3 sin2π (x - vt + 1.5) cm

These waves are simultaneously passing through a string. The amplitude of the resulting wave is ______.

A ray of light passes from vacuum into a medium of refractive index µ, the angle of incidence is found to be twice the angle of refraction. Then the angle of incidence is ______.

A given ray of light suffers minimum deviation in an equilateral prism P. Additional prism Q and R of identical shape and of the same material as P are now added as shown in the figure. The ray will now suffer ______.

Equipotential surfaces are shown in figure. Then the electric field strength will be ______.

The angle made by incident ray of light with normal of the reflecting surface is called ______.