Light passes from a material with index of refraction 1.3 into one with index of refraction 1.2. Compare to incident ray, the refracted ray will ___________.

• A) Not bend
• B) Have more intensity
• C) Bend towards the normal
• D) Bend away from the normal

What is the unit of magnification factor?

• A) degree.Kelvin
• B) no units
• C) radian.Kelvin
• D) meter.Kelvin

The speed of light in free space is:

• A) Unpredictable
• B) Constant
• C) Less than that in air
• D) Variable

Heat is:

• A) A temperature di?erence
• B) Energy transferred by virtue of a temperature di?erence
• C) Energy transferred by macroscopic work
• D) Energy content of an object

In which year did Ole Rømer conduct the experiment to estimate the speed of light using the timing of the eclipse of Jupiter's moon?

• A) 1675
• B) 1764
• C) 1558
• D) 1842

Which celestial body is involved in Ole Rømer's experiment to measure the speed of light?

• A) Saturn
• B) Mars
• C) Jupiter
• D) Venus

Why does the entropy of a gas increase when it is heated?

• A) Atoms move slower.
• B) Atoms become heavier.
• C) Atoms move faster.
• D) Atoms collide less frequently.

How do rays reflect off a concave lens compared to a convex lens?

• A) Converge
• B) Diverge
• C) Scatter
• D) No change

The equation of state for an ideal gas is:

• A) ΔE = Δq + Δw
• B) E = q + w
• C) PV = NkBT
• D) PV = NkBR

When you stand in front of a plane mirror, your image is:

• A) virtual, erect, and smaller than you
• B) real, inverted, and the same size as you
• C) real, erect, and smaller than you
• D) virtual, erect, and the same size as you

Thin films formed due to detergents (soap / shampoo) are due to ______.

• A) diffraction
• B) reflection
• C) interference
• D) absorption

A particle with zero mass and energy E carries momentum:

• A) Ec
• B) E/c
• C) vEc
• D) Ec2

The resolving power of a telescope can be increased by:

• A) inserting a correction lens between objective and eyepiece
• B) increasing the objective focal length and decreasing the eyepiece focal length
• C) increasing the lens diameters
• D) decreasing the lens diameters

Hotness or coldness of an object is represented in terms of:

• A) Chemical energy
• B) Electrical energy
• C) Temperature
• D) Heat

A light entering into glass prism from air does not give change in its:

• A) Wavelength
• B) Direction
• C) Velocity
• D) Frequency

Following are the ways by which light can interact with matter, EXCEPT:

• A) Interference
• B) Emission
• C) Absorption
• D) Transmission

What must be supplied to melt a solid without a temperature change?

• A) Kinetic energy
• B) Pressure
• C) Specific heat
• D) Latent heat of fusion

In special relativity, the factor γ is used to calculate:

• A) Length contraction
• B) Neither time dilation nor length contraction
• C) Both time dilation and length contraction
• D) Time dilation

Which of the following device work on the principle of interference of light:

• A) Compound microscope
• B) Telescope
• C) Young’s double slit experiment
• D) Newton rings apparatus

Which of the following is true of all virtual images?

• A) They are smaller than the objects
• B) They can be seen but not photographed
• C) They are larger than the objects
• D) None of these