Is light visible or invisible?

Light is invisible until it hits an object. It can only be visible to us whenever it get scattered or bounced off the dust particles in the intervening medium. We can see the source of light like stars at night as they are too dim to light up much but that light does hit our eyes and therefore we see the light. The above discussion on visibility of light is only confined to the electromagnetic radiation of wavelength from 400 nm to 700 nm which is called visible light, as these electromagnetic radiations gives the sensation of sight.

  • Chemistry MCQs for Class 11 Chapter 5 States of Matter

    February 26, 2021 by

    Q.1. The rate of diffusion of methane is twice that of X. The molecular mass of X is(a) 64.0(b) 32.0(c) 40(d) 80 Answer (a) Q.2. Which of the following is not a type of van der Waal’s forces?(a) Dipole – dipole forces(b) Dipole – induced dipole forces(c) Ion – dipole forces(d) London forces Answer (c)… Read more

  • Chemistry MCQs for Class 11 Chapter – 3 Classification of Elements and Periodicity in properties

    February 18, 2021 by

    Q.1. Periodic classification of elements is used to examine the(a) periodic trends in physical properties of elements(b) periodic trends in chemical properties of elements(c) Both (a) and (b)(d) None of the above Answer (c) Periodic classification of elements follow a logical consequence of electronic configuration of atoms which is used to examine the physical and… Read more

  • NEET Biology Chapter 13 Photosynthesis in Higher Plants

    February 9, 2021 by

    Nearly all of the members (with some exceptions) categorized under the kingdom Plantae are autotrophic in nature. Being autotrophic gives the plants the ability to synthesize their own food for their own nutrition and well being as well as providing a source of nutrition for heterotrophic organisms which are incapable of synthesizing their own food… Read more

  • MCQ based on Newton’s Law of Gravitation

    February 7, 2021 by

    Q.1. Newton’s universal law of gravitation applies to(a) small bodies only(b) planets only(c) both small and big bodies(d) only valid for solar system Answer (c) It is applicable to both small & big bodies. Q.2. The value of G varies with(a) height above the earth’s surface(b) depth below the ground(c) radius of the planet(d) None… Read more

  • MCQ based on Kepler’s Law

    February 6, 2021 by

    One of the greatest ideas proposed in human history is the fact that the earth is a planet, among the other planets, that orbits the sun. Johannes Kepler discovered three empirical laws by using the data on planetary motion: Law of Orbits: Each planet moves in an elliptical orbit, with the sun at one focus… Read more

View all posts

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this:
search previous next tag category expand menu location phone mail time cart zoom edit close