A plane mirror always forms a real image.

The image formed by a plane mirror may be magnified or diminished.

The image formed by a plane mirror is always unmagnified and inverted.

The image formed by a plane mirror is always unmagnified and erect.

unity

more than unity

less than unity

equal to 1.33

from a denser to a rarer medium

from a rarer to a denser medium

from one medium to another of equal refractive index

from one medium to another of equal absorption

Red

Green

Yellow

Violet

Light always propagates along a straight line.

Two light rays do not disturb each other upon intersection.

An object and its image are interchangeable.

None of these

fog absorbs light

light is scattered by the droplets in the fog

light suffers total reflection in the droplets in the fog

the refractive index of fog is infinity

3

4

5

6

the wavelength of sound only

the density and elasticity of the gas

the intensity of sound waves only

the amplitude and frequency of sound

harmony

melody

chord

musical interval

h

h/2

h/3

h/4

less than unity

equal to unity

greater than unity

less as well as greater than unity, depending upon the experimental arrangements

red light

violet light

green light

yellow light

resonance of sound

constructive interference

principle of superposition of waves

reflection of sound

The reflected ray and the incident ray lie in the same plane.

The incident ray, reflected ray and the normal ray are concurrent.

The angle of incidence is equal to the angle of reflection.

None of these

A "real object" always produces a "virtual image" in a plane mirror. This is because the reflected rays diverge.

A ray parallel to the principal axis, after reflection, will pass through the centre of curvature in case of a concave mirror.

Concave mirrors are commonly used as rear-view (wing) mirrors in vehicles.

All of the above

transverse progressive wave

longitudinal progressive wave

stationary wave

electromagnetic wave

energy is uniformly distributed

energy is maximum at nodes and minimum at antinodes

energy is minimum at nodes and maximum at antinodes

alternating maxima and minima of energy are produced at nodes and antinodes

Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

(A) is true, but (R) is false.

(A) is false, but (R) is true.

Faraday

Gauss

Benjamin Franklin

Madam Curie

the speed of light respectively is 9 times and 8 times slower in glass and water with respect to vacuum

the speed of light in glass is 9/8 times faster than that in water

the speed of light in water is 9/8 times faster than that in glass

None of these

Light travels faster in vacuum than in air.

The wavelength of light is longer than the wavelength of sound.

Light travels nearly 330 metres in one second.

Speed of sound is mach one.

The image has left-right reversal.

The image has front-back reversal.

The image has no top-bottom reversal.

All of the above

interference of light

total internal reflection of light

scattering of light

double refraction of light

he must direct the beam vertically upwards

he has to direct the beam horizontally

he has to direct the beam at an angle to the vertical, which is slightly less than the critical angle of incidence for total internal reflection

he has to direct the beam at an angle to the vertical, which is slightly less than the critical angle

positive

negative

zero

positive and negative