A consequence of Einstein’s theory of relativity is:

• A) Moving rods are longer than when they are at rest
• B) Every thing is relative
• C) Light has both wave and particle properties
• D) Moving clocks run more slowly than when they are at rest

What fundamental principle explains the observation that electrons in an atom can only exist in certain definite energy states?

• A) Conservation of energy
• B) Quantization of energy levels
• C) The uncertainty principle
• D) Principle of superposition

The proper time between two events is measured by clocks at rest in a reference frame in which the two events:

• A) Occur in Boston
• B) Occur at the same time
• C) Satisfy none of these given
• D) Occur at the same coordinates

How does the position of an object relative to a concave mirror affect the size of its virtual image?

• A) Farther objects have larger images.
• B) Closer objects have larger images.
• C) Only objects at the center have images.
• D) The size is always the same regardless of distance.

What does it mean for a wave to be coherent?

• A) A wave with varying frequency
• B) A wave with same speeds
• C) A wave with a constant phase
• D) A wave with the same intensity

The phenomenon in which hot bodies emit radiation is known as_____.

• A) Gamma radiations
• B) Visible light
• C) X-rays
• D) Black-body radiation

A particle with rest mass m moves with speed 0.6c.Its kinetic energy is:

• A) mc2
• B) 0.18mc2
• C) 0.22mc2
• D) 0.25mc2

According to the Stefan-Boltzmann Law, what is the relationship between the power radiated per unit area (P) and the temperature (T) of a hot body?

• A) P ∝ T2
• B) P ∝ T
• C) P ∝ T4
• D) P ∝ T−1

If torsional constant is increased by 4 time, the time period of torsion pendulum becomes,

• A) Half
• B) Remains same
• C) Quadruple
• D) Double

The areal velocity of a planet revolving around the sun, with an angular momentum of 10 kgm2s-1, and mass of 5000 kg, will be (Hint: use Kepler’s 2nd law)

• A) 0.001 m2 s-1
• B) 0.005 m2 s-1
• C) 0.01 m2 s-1
• D) 0.5 m2 s-1

If moment of inertia is increased by 4 time, the time period of torsional becomes,

• A) Half
• B) Double
• C) Quadruple
• D) Remains same

In the formula F= Gm1m2/r2, the quantity G:

• A) is a universal constant of nature
• B) is used only when Earth is one of the two masses
• C) is greatest at the surface of Earth
• D) depends on the local value of g

How does the gravitational potential change as you move farther away from a body on earth?

• A) It remains constant
• B) It increases linearly
• C) It decreases with increasing distance
• D) It becomes zero

If radius of earth is increased by Four time, the escape velocity becomes,

• A) Double
• B) Triple
• C) Quadruple
• D) Remains constant

If you double the height of an object above the Earth's surface, how does the gravitational potential energy change?

• A) It becomes zero
• B) It doubles
• C) It remains constant
• D) It halves

Schwarzschild radius of a black hole related to,

• A) Escape velocity
• B) Gravitational constant
• C) Mass of the black hole
• D) Orbital velocity

A satellite of mass 200 kg is in orbit around the Earth at an altitude of 500 km. The gravitational potential energy of the satellite will be,

• A) 1.2 MJ
• B) 2.4 MJ
• C) 4.8 MJ
• D) 3.6 MJ

The unit of areal velocity is,

• A) m2 s-2
• B) m s-1
• C) m2 s-1
• D) a. m2 s

A rocket ship is coasting toward a planet. Its captain wishes to know the value of g at the surface of the planet. This may be inferred by:

• A) measuring g the diameter of the planet
• B) observing the ship’s acceleration and correcting for the distance from the center of the planet:
• C) measuring the apparent weight of an object of known mass in the ship
• D) measuring the density of the planet

What is the escape velocity from Earth's surface?

• A) 11.2 m/s
• B) 618 m/s
• C) 11.2 km/s
• D) 11.2 km/h