A proton carrying 1 MeV kinetic energy is moving
in a circular path of radius R in uniform magnetic
field. What should be the energy of an a-particle to describe a circle of same radius in the same field? (In MeV)
in a circular path of radius R in uniform magnetic
field. What should be the energy of an a-particle to describe a circle of same radius in the same field? (In MeV)
Anonymous Quiz
16%
2
39%
1
32%
4
13%
0.5
Under the influence of a uniform magnetic field, a
charged particle moves with a constant speed v in a
circle of radius R. The time period of rotation of the particle
charged particle moves with a constant speed v in a
circle of radius R. The time period of rotation of the particle
Anonymous Quiz
18%
depends on R and not on v
50%
is independent of both v and R
26%
depends on both v and R
5%
depends on v and not on R.
A particle of mass m, charge Q and kinetic energy
T enters in a transverse uniform magnetic field of
induction B. After 3 seconds the kinetic energy of the particle will be
T enters in a transverse uniform magnetic field of
induction B. After 3 seconds the kinetic energy of the particle will be
Anonymous Quiz
14%
T
45%
2T
35%
3T
6%
4T
At 127 C radiates energy is 2.7 X 10J/s At what temperature radiated
energy is 4.32 X 10 J/s
energy is 4.32 X 10 J/s
Anonymous Quiz
26%
400 K
47%
4000 K
23%
80000 K
5%
40000 K
The measurement 2.45 × 10^3 cm can be expressed in scientific notation as:
Anonymous Quiz
27%
24.5 × 10^2 cm
34%
0.245 × 10^4 cm
26%
0.245 × 10^3 cm
13%
245 × 10^1 cm
If the velocity of an object is given by v = 20t + 5t², where v is in m/s and t is in seconds, what are the dimensions of the acceleration?
Anonymous Quiz
39%
[M][L][T⁻²]
32%
M][L][T⁻¹]
19%
[M][L][T⁻³]
9%
[M][L²][T⁻²]
The uncertainty in position and momentum of a particle is described by Heisenberg's Uncertainty Principle. Which of the following statements is correct?
Anonymous Quiz
27%
The product of uncertainties is constant
32%
The sum of uncertainties is constant.
33%
Both uncertainties can be precisely determined simultaneously
8%
The uncertainties are independent of each other.
A physical quantity P is given by P = A²B³, where A and B are quantities with dimensions. What are the dimensions of P?
Anonymous Quiz
34%
[A²B³]
31%
[A³B⁴]
28%
[A⁴B³]
7%
[A²B⁶]
The measurement of the speed of light in a medium is 2.25 × 10^8 m/s. What is the refractive index of the medium if the speed of light in a vacuum is 3.0 × 10^8 m/s?
Anonymous Quiz
25%
0.75
36%
0.90
31%
1.33
7%
1.50
The numerical value of g, the acceleration due to gravity, is approximately 9.8 m/s². What is the uncertainty in the measurement of g if the uncertainty in the measurement of time is 0.1 s?
Anonymous Quiz
25%
0.98 m/s²
37%
0.49 m/s²
30%
0.10 m/s²
7%
0.05 m/s²
The velocity of light (c) and Planck's constant (h) are related by the equation c = λν, where λ is the wavelength and ν is the frequency. What are the dimensions of Planck's constant (h)?
Anonymous Quiz
22%
[M][L²][T⁻³]
47%
[M][L²][T⁻²]
23%
[M][L³][T⁻¹]
8%
[M][L][T⁻²]
A block has a mass of 2 kg. If the weight of the block is measured on the surface of the Earth and on another planet, which of the following statements is true?
Anonymous Quiz
20%
The mass remains the same on both the Earth and the planet.
38%
The mass is greater on the planet than on the Earth.
32%
The weight is greater on the Earth than on the planet.
10%
The weight is the same on both the Earth and the planet.
The period (T) of a simple pendulum is given by T = 2π√(L/g), where L is the length of the pendulum and g is the acceleration due to gravity. What are the dimensions of g in terms of mass (M), length (L), and time (T)?
Anonymous Quiz
21%
[L][T⁻²]
40%
[M][L][T⁻²]
32%
[M][L²][T⁻¹]
6%
[M][L][T⁻³]
If the mass of an object is halved while its radius is doubled, what happens to its gravitational potential energy?
Anonymous Quiz
16%
It becomes half
47%
It becomes one-fourth
30%
It remains the same
7%
It becomes four times
What is the orbital velocity of a satellite in a circular orbit around Earth, given that the radius of the orbit is (7 \times 10^6 m)? (Use (G = 6.67 \times 10^{-11} Nm^2/kg^2))
Anonymous Quiz
14%
7 km/s
41%
10 km/s
35%
5 km/s
10%
15 km/s
If the separation between two masses is tripled, what happens to the gravitational force between them?
Anonymous Quiz
25%
It becomes nine times
36%
It becomes three times
30%
It becomes one-third
9%
It remains the same
Two planets have the same radius but different masses. Which planet will have a greater escape velocity?
Anonymous Quiz
17%
The more massive planet
26%
The less massive planet
44%
Both planets have the same escape velocity
13%
It depends on the distance from the Sun
If the mass of an object is doubled while its radius remains the same, what happens to its gravitational potential energy?
Anonymous Quiz
25%
It becomes four times
45%
It becomes twice
24%
It remains the same
6%
It becomes half
What is the escape velocity for an object on the surface of Earth?
Anonymous Quiz
27%
11 km/s
52%
9.8 km/s
17%
7 km/s
4%
5 km/s
If an object is taken to a height twice the Earth's radius above the surface, how would its weight change?
Anonymous Quiz
20%
It would become four times
33%
It would become twice
32%
It would remain the same
14%
It would become half