Light can travel in

We see the image of our face when we look into the mirror. It is due to:

Angle between incident ray and normal ray is called angle of

An instrument which enables us to see things which are too small to be seen with naked eye is called

An incident ray is:

Name a metal which is the best reflector of light?

Normal, incident ray and reflective ray lie at a same point in

Why light is said to have a dual nature?

What colour of light is formed when red, blue and green colours of light meet in equal proportion?

Which of the following are primary colours?

In the human eye, the focal length of the lens is controlled by

The total internal reflection prisms are used in

What is the focal length of a curve mirror is it has a radius of curvature is 40 cm.

Which type of mirror used in the headlight of a motorcycle?

Which type of mirror used in the dental clinic?

Which of the following has the highest wavelength?

The physical quantity which remains constant in case of refraction?

What is the relation between the radius of curvature and the focal length of a mirror?

The refractive index of a medium with respect to vacuum is

Which colour suffers the maximum deviation, when white light gets refracted through a prism?

Snell’s law is valid for ?

On comparing red and violet, which colour has more frequency?

Deviation of light, that passes through the centre of lens is

The split of white light into 7 colours by prism is known as

What is the speed of light in free space?

Which type of light waves/rays used in remote control and night vision camera ?

Speed of sound is higher in which of the following mediums?

The frequency of ultrasound wave is typically ---?

ദൂരത്തിൻ്റെ ഏറ്റവും കൂടിയ പ്രായോഗിക യൂണിറ്റ് താഴെപ്പറയുന്നവയിൽ ഏതാണ് ?

In an automobile, the solenoid which is a part of :

The least count of universal vernier caliper is

When the disc of an energy meter is rotating even without connecting any load the error is called?

The quantity of scale on the dial of the Multimeter at the top most is :

The most suitable motor for electric traction is :

A four pole 1200 RPM alternator will generate emf at a frequency of :

The process of adding impurities to a semiconductor is known as:

Which part of the PMMC instrument produce eddy current damping?

What is the working principle of a two winding transformer?

A permanent magnet moving coil instrument will read :

Force x Distance =

Opening and closing of the valves in relation to the position of piston and flywheel is called ?

The power available at the engine's flywheel is called :

The ratio of work output of an engine to the fuel energy burnt is called ?

Snips are used for ?

A round rod which does not have a head, and has external threads at both ends is called

Which of the following is not a precision measuring instrument?

The cross-sectional shape of an allen key is :

Which file has minimum space between their teeth?

Which of the following is used for securing a tightened nut in position?

Which of the following should not be done by a good mechanic?