The image produced by a convex mirror of an erect object in front of the mirror is always:

• A) Real, erect, and larger than the object
• B) Real, erect, and smaller than the object
• C) Virtual, erect, and smaller than the object
• D) Virtual, erect, and larger than the object

Internal energy of a gas is proportional to:

• A) Temperature
• B) Pressure
• C) Number of molecules
• D) Volume

In meta stable state, electrons reside:

• A) 10-8 sec
• B) 10-13 sec
• C) 10-3 sec
• D) 10-5 sec

The value of absolute zero is:

• A) -32 °F
• B) -273.15 K
• C) 0 K
• D) -460 °C

If the ratio of maximum wavelength for black body radiation is 3:6, the ratio of temperature for a black body is:

• A) 3:6
• B) 6:3
• C) 1:2
• D) 2:1

Fermat's principle, also known as:

• A) The principle of least resistance
• B) The principle of constant speed
• C) The principle of least time
• D) The principle of least frequency

Which instrument would be best suited for observing celestial bodies such as stars, planets, and galaxies?

• A) Simple microscope
• B) Compound microscope
• C) Both simple and compound microscopes
• D) Telescope

The focal length of a spherical mirror is N times its radius of curvature where N is:

• A) 2
• B) 1/2
• C) 1/4
• D) 1

If the source temperature is raised, the efficiency of heat engine will:

• A) Decrease
• B) Remain constant
• C) First increase then decrease
• D) Increase

Heat is defined as:

• A) The degree of hotness.
• B) Flow of internal energy due to a temperature difference.
• C) A type of phlogiston.
• D) A colored, weightless fluid.

There is no way to detect:

• A) State of motion
• B) Accelerated motions
• C) Static motion
• D) Absolute uniform motion

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.