The type of microscope that uses a single convex lens to magnify objects is:

• A) Simple microscope
• B) Compound microscope
• C) Telescope
• D) Electron microscope

The plants look green. It is because they have chlorophyll in them. Chlorophyll makes leaves green to absorb ___________.

• A) Green only
• B) Blue only
• C) Red and blue both
• D) Red only

There is a temperature at which the reading on the Kelvin scale is numerically:

• A) Less than zero
• B) Lower than that on the Celsius scale
• C) Equal to that on the Fahrenheit scale
• D) Equal to that on the Celsius scale

The threshold frequency in photoelectric effect is described as:

• A) Indicates the maximum energy of the incident light.
• B) Sets the minimum energy required for electron ejection.
• C) Determines the speed of emitted electrons.
• D) Determines the color of the emitted light.

The units of Stefan Boltzman constant are _______.

• A) W m^-2K^-4
• B) W m^-2K^4
• C) W^-2 m^-2K^-4
• D) W m^2K^-4

How is the "strength" of a lens (measured in diopters) related to its focal length?

• A) Directly proportional
• B) Inversely proportional
• C) No relation
• D) Equal

What would be the angle of incidence for a light ray with a zero reflection angle?

• A) 45 degrees
• B) 0 degree
• C) 90 degrees
• D) 180 degrees

The heat capacity of an object is:

• A) The amount of heat energy per kilogram that raises its temperature by1?C
• B) The amount of heat energy that raises its temperature by1?C
• C) The amount of heat energy that changes its state without changing its temperature
• D) The ratio of its specific heat to that of water

When an electromagnetic wave strikes the boundary of a denser medium, it undergoes:

• A) A phase change of 180° upon reflection.
• B) A phase change of 90° upon reflection.
• C) A phase change of 90° upon refraction.
• D) A phase change of 180° upon refraction.

A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. The corresponding Celsius temperature is:

• A) 301?C
• B) 574?C
• C) 614?C
• D) 232?C

Which type of defect is caused by the different wavelengths of light being focused at different distances?

• A) Chromatic aberration
• B) Hypermetropia
• C) Myopia
• D) Spherical aberration

Interference of light is evidence that:

• A) light is a transverse wave
• B) light is electromagnetic in character
• C) light is a wave phenomenon
• D) the speed of light is very large

Length contraction refers to:

• A) Expansion of space
• B) Shortening of space
• C) Space evaluation
• D) Stationary space

The efficiency of a heat engine is always:

• A) Less than 1
• B) zero
• C) More than 1
• D) 1

Time dilation is more prominent at:

• A) High speed
• B) Rest
• C) Constant speed
• D) Low speed

The photoelectric effect is described as:

• A) Metals emit light when electrons move from one energy level to another.
• B) Electrons are ejected from a metal surface under the influence of light.
• C) Electrons move freely in a metal under the influence of an electric field.
• D) Electrons are emitted from a metal surface when it is heated.

Entropy measures the:

• A) Disorder of the system
• B) Orderliness of the system
• C) Energy of the system
• D) Order of the system

The most refined form of matter is:

• A) Smog
• B) Fog
• C) Smoke
• D) Light

Time dilation and length contraction are essential concepts in understanding:

• A) Classical mechanics
• B) Einstein's theory of relativity
• C) Bio-physics
• D) Electromagnetism

When an electromagnetic wave strikes the boundary of a rare medium, it undergoes:

• A) A phase change of 180° upon refraction.
• B) A phase change of 0° upon reflection.
• C) A phase change of 0° upon refraction.
• D) A phase change of 180° upon reflection.