Speed =

Device used to measure speed of a car is

Speed of a car is 40km/h. What is the time taken if the distance between 2 cities is 480 km?

If distance and time is given, what is the object's speed?

The instrument installed in a car for measuring the distance travelled by the car is called:

The clocks and watches which are used for measuring time are based on :

The distance moved by an object in a unit time is called

The time taken by the pendulum to complete one oscillation is called its

The to and fro motion of a simple pendulum is an example of _________ motion.

A bus takes 30 minutes to travel a distance of 25 kilometers. The speed of the bus in km/h is :

Which one of the following is a time measuring device:

SI unit of time is:

A simple pendulum takes 32 seconds to complete 20 oscillations. The time period of this pendulum is:

One kilometre equals ----

One hour equals ----- seconds

The motion of a swing shows ------- motion

A bus travels 54 km in 90 minutes. The speed of the bus is...... m/s

Observe the figure.

The time period of a simple pendulum is the time taken by it to travel from

Is the change in position with respect to a reference point.

From the point of view of an observer sitting on a moving bus:

(select the correct answer)

80 km / 4 hours =

36km/h can also be expressed as

A bus travels 54 km in 90 minutes. The speee of the bus is

A simple pendulum takes 42 sec. to complete 20 oscillations.what is its time period?

Time period of a simple pendulum depends upon its

A shadows length is the shortest at ___________

Latha is observing her image in a plane mirror. The distance between the mirror and her image is 6 m. If she moves 2m towards the mirror then the distance between latha and her image will be

If you are standing 2m away from a plane mirror the distance between you and your image are

Angle between incident and reflected ray i.e. angle AOB is

Convex lens is also called as

Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size, whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli respectively are

Which of the following always diverge light rays?

Which of the following would you prefer to use while reading small letters found in a dictionary?

(a) A convex lens

(b) A convex mirror

(c) A concave lens

(d) Either (a) or (b)

if an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be

An object which does not emit its own light is a non-luminous body.

The moon is a natural light source.

When light hits an opaque object it changes direction

and bounces off. This is called _________

When light travels through two different materials it bends and changes

direction because the speed of light changes. This is called __________

Objects that have very shiny, smooth surfaces reflect a lot of light and reflect perfect images.

Is the given statement true or false?

A __________ is a three-dimensional piece of glass that bends

light and separates it into its seven different colours.

The light separates into

seven different colours called the ________

Light appears white or transparent, but it is actually

made up of several different colours.

Is the given statement true or false?

The _________ is the coloured circle at the front of the eye.

The lens focuses the image onto the __________

The _________ is the hole in the centre of the iris. Light enters the eye through this hole.

The _________ is the hole in the centre of the iris. Light enters the eye through this hole.

concave mirror forms mainly two types of images based on the distance. name them.

which mirror can form a magnified image

rainbow is formed by ____ of sunlight

a diverging mirror is

if the image is always virtual then the mirror can be

What is this

What is a cataract?

Light enters the eye through a thin membrane called the

Following controls and regulates the amount of light entering the eye

What is the near point of a normal human eye?

How can hypermetropia be corrected?

How can near sightedness be corrected?

What is myopia?

Q. This part of the eye carries the message from your eye to the part of your brain that controls vision. 

Q. The vitreous humor is a liquid inside of your eye.  When light passes from the lens into the vitreous, the light changes medium.  What happens to light because of this medium change? 

Q. Where is rods and cones are located in our eyes?

Which of the following statements is correct regarding the propagation of light of different colors of white light in air?

What is the clear front surface of the eyeball called?

What is the thin circular structure of your eye that has color?

The iris determines the amount of light that enters the eye.

What is the black hole at the center of your eye called?

Which part of the eye is just behind the pupil?

What is the job of the lens?

What is located at the back of the eyeball?

What is the job of the retina?

What transfers the signals from your eyeball to your brain?

The human eye is composed of how many working parts?

bifocal lens is used to correct this defect.

this problem arises due to foggy or cloudy lens .

which colour bends the most on refraction through a triangular prism?

This phenomenon is responsible for rainbow formation.

angle of deviation in a triangular prism is angle between