What will happen to the object which will be less denser than water? more denser than water?

Q: Consider an opaque body capable of absorbing red light and illuminated by: Yellow light

A: given: body absorbs = red light (R) illuminated by   = yellow light  (Y)

Q: If, while standing on a bank, you wish to spear a fish beneath the water surface in front of you,…

A: If, while standing on a bank, you wish to spear a fish beneath the water surface in front of you,…

Q: What is meant by power of accommodation of the eye of a person

A: Power of accommodation : It is the maximum change in the focal length of eye lens so that near and…

Q: Which warms more quickly in sunlight- a colorless or a colored piece of glass? Why?

A: A colored glass can absorb all the colors except its own color while the colorless glass can't…

Q: More than 200 years later, Albert A. Michelson sent a beam of light from a revolving mirror to a…

A: Given:  distance,d = 15 km = 15000 m  speed,c = 3 x 108 m/s

Q: A small microwave oven is shown below, looking at it from overhead. (The circle in the middle of the…

A: Given information: The frequency of the microwaves (f) = 1.5 GHz The dimensions of the box (l×w) =…

Q: Can one bit of light bounce of another bit of light?

A: Yes

Q: How does the average speed of light in glass compare with its speed in a vacuum?

A:

Q: What happens to a ray of light when it passes through a lens?

A: Lens can converge or diverge light.

Q: could a light bulb approximate a blackbody?

A: Black body absorbs radiation of all wavelength which are incident on it. Black body does not reflect…

Q: Why will the leaves of a red rose be warmed more than the petals when illuminated with red light?

A: The petals of a red rose reflect all the red light coming from the source, whereas the leaves absorb…

Q: When two spherical soap bubbles coalesce , V is the consequent change in the volume of contained air…

A: Given, V is the consequent change in in the volume of contained air and S is the change in total…

Q: Why will the leaves of a red rose be warmed more than the petals when illuminated with red light?…

A: Given: red rose

Q: What besides the amount of light affects the size of the pupil of the eye?

A: The pupil response to cognitive and emotional events occurs on a smaller scale than the light…

Q: Light travels faster in    options:   dense air.   same in each.   vacuum   thin air.

A: Answer - Light travels faster in vacuum

Q: Please fill in the blanks: As light travels from a more dense substance into a less dense substance.…

A: According to the law of reflection that the angle of reflection equals the angle of incidence.…

Q: Compare the spacing of streamlines around a tossed baseball that doesn’t spin in flight with the…

A: Draw the diagram of the baseball and streamline, when the baseball is not spinning.

Q: Why can't light carry any momentum at all?

A:

Q: A woman standing on a cliff is watching a motor boat as the boat approaches the shoreline directly…

A: Given : Woman eyes are 250 foot above the water level

Q: The lens nearest the viewer’s eye is called the________.

A: The lens nearest the viewer’s eye is called the Eyepiece . An eyepiece is the lens which is…

Q: A ray of light travels from one medium to another medium. The total internal reflection of the light…

A: Total internal reflection occurs when meet two necessary conditions :  the angle of incidence (…

Q: Why do mirrors flip left to right and not up to down?

A:

Q: A drop of oil placed on the surface of water spreads out. But a drop of water placed on oil…

A: Cohesive Force – Cohesive Force are attractive force which acts between similar molecules.Adhesive…

Q: Do you think that the formation of a rainbow is more a demonstration of the wavelikeor particle-like…

A: Rainbow formation: Rainbow formation is formed due to refraction between water droplets (High…

Q: Identical rays of light enter three transparent blocks composed of different materials. Light slows…

A: As identical ray incident on all the three blocks, the velocity of the light in the blocks will only…

Q: Water is depressed in glass tube whose inner surface is coated with paraffin wax.

A: Water is depressed in a glass tube whose inner surface is coated with paraffin wax because of the…

Q: Long sight: The eyeball is too Your answer

A: Solution:         Hypermetropic correction

Q: Dispersion occurs when _____. some materials bend light more than other materials a material slows…

A:

Q: Does light be towards the normal or away from the normal as it passes from a less dense to a more…

A:

Q: which warms more quickly in sunlight -a colourless or coloured piece of glass? Also explain Why?

A: A coloured glass can absorb all the colours except its own colour while the colourless glass can’t…

Q: Which travels more slowly in glass , red light or violet light?

A: White light is a combination of all colours, using prism white light from our Sun can be separated…

Q: What is the relation between contact angle that a drop makes with a surface, and whether the drop…

A: The angle of contact is defined as the angle subtended between the tangents drawn at the liquid…

Q: What determines whether a material is transparent or opaque?

A:

Q: Why will body emit more radiation under similar conditions, a black body or a polished body?

A: According to the Stefan-Boltzmann law, the energy radiated is

Q: If you fire a bullet through a board, it will slow down inside and emerge at a speed that is less…

A: No, light does not slow down when it passes through glass and emerges at a slower speed. When a…

Q: When light goes from a more dense medium to a less dense one,

A: Refraction is the phenomena of light in which light bends when passing through one transparent…

Q: A laser with 7.6 watts of power has a diameter of 13 cm. It's directed at the surface of a silver…

A:

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.