CUET (UG) entrance exam Question Bank Solutions

If the sun radiates energy at the rate of 3.6 × 10³³ ergs/sec the rate at which the sun is loosing mass is given by ______.

For 7.7 Mev alpha particles scattering from aluminium (Z = 13), the distance of closest approach in a bead on collision is ______.

Useful data

`1/(4 pi ∈_0) = 8.99 xx 10^9` newton m²C^-2; c = 1.60 × 10^-19 C; leV = 1.60 × 10^-19j.

As compared to ¹²C atom, ¹⁴C atom has ______.

The electromagnetic theory of light failed to explain ______.

The displacement of a particle from its mean position is given by x = 4 sin (10πt + 1.5π) cos (10πt + 1.5π). The motion of the particle is

In a capillary tube, water rises by 1.2 mm. The height of water that will rise in another capillary tube having half the radius of the first is:

Which one of the following statements does not hold good when two balls of masses m₁ and m₂ undergo elastic collision?

An automobile moves on a road with a speed of 54 km h⁻¹. The radius of its wheels is 0.45 m and the moment of inertia of the wheel about its axis of rotation is 3 kg m². If the vehicle is brought to rest in l 5s, the magnitude of average torque transmitted by its brakes to the wheel is:

A radioactive nucleus (initial mass number A and atomic number Z) emits 3 α- particles and 2 positrons. The ratio of the number of neutrons to that of protons in the final nucleus will be:

The equation of trajectory of a projectile is given by y = `"x"/sqrt3 - "gx"^2/20`, where x and y are in metres. The maximum range of the projectile is:

A coil of one turn is made of a wire of certain length and then from the same length, a coil of two turns is made. If the same current is passed in both the cases, then the ratio of the magnetic inductions at their centres will be:

The working of a dynamo is based on the principle of

Displacement current goes through the gap between the plantes of a capacitors. When the charge of the capacitor:-

Cathode rays can be deflected by

In photoelectric effect, the photoelectric current

Plutonium decays with half of 24000 years. If plutonium is store for 72000 yrs. The fraction of .its that remain:-

The radius of electron's second stationary orbit in Bohr's atom is R. The radius of 3^rd orbit will be:-

The ratio of the frequencies of the long wave length its of Lyman Balmer series of hydrogen spectrum is

Which of the following transition in a hydrogen atom emit photon of the highest frequency:

The ratio active Nude 7N¹³ decays 6C¹³ through the emission of