The Moon has no sustained atmosphere. What advantages would you have if you built an observatory on the lunar surface?

Q: Why do objects illuminated by moonlight lack color?

A: Objects illuminated by moonlight do not lack color. It is just that the intensity of moonlight is…

Q: How did Archimedes use mirrors to burn up invaders' ships?

A:

Q: What is the another name for Farsightedness?

A:

Q: А-Е H. 4. В -F Based on the image, which is NOT a wavelength? С -Е D- H

A: Wavelength is defined as distance between two successive crest or two successive troughs of wave.

Q: We readily note the bending of light by reflection and refraction, but why are we not aware of the…

A: Given:  bending of light

Q: How rays are refracted when entering a more dense material?

A:

Q: How far must two objects on the Moon be from each other so that they can be solved by the eye…

A: Diameter of the pupil is d = 5 mm = 5 x 10-3 m Wavelength of the light is 600 nm

Q: How rays are refracted when entering a less dense material?

A: When light ray enters from high dens material to less dense material rays are refracted away from…

Q: How many telescopes does Kitt Peak National Observatory have?

A: Kitt peak national observatory have THREE  major telescope.

Q: Seeing Venus would be impossible without a telescope * O true Error

A: Venus is one of the brightest objects in the night sky. Venus is visible without a telescope. Venus…

Q: Estimate the separation of two points on the Moon’s surface that can just be resolved by 200-in…

A: Distance of moon from the Earth, L = 3.84 x 108 m Diameter of the telescope, D = 200 in = 200 x 2.54…

Q: 34.7 • The diameter of Mars is 6794 km, and its minimum distance from the earth is 5.58 x 10' km.…

A:

Q: Persistence of vision is the principle behind:  A) Telescope B) Periscope C) Cinema D) Microscope

A: The image on an object forms on the retina rests on the retina for 1/16 th second. This is called…

Q: Which kind of road surface is easier to see when driving at night- a pebbled, uneven surface or a…

A: As the light rays coming from the objects fall on the person’s eye, then the person can see the…

Q: Give difference between microscope and telescope.

A: Microscopes and telescopes function same by letting a person view objects not visible to the naked…

Q: Explain the inverse relationship between light extinction coefficient and photic depth of water…

A: Light extinction coefficient (u) is the decrease in light intensity with depth in water bodies and…

Q: Which kind of road surface is easier to see when driving at night—a pebbled, uneven surface or a…

A:

Q: Optical and radiotelescopes are built on the ground but X-ray astronomy is possible only from…

A: Optical and radio telescopes are built on the ground but X-ray telescope are only build on satellite…

Q: The moon is 3.5 × 106 m in diameter and 3.8 × 108 m from the earth’s surface. The 1.2-m-focal-length…

A:

Q: The planet Venus is different from the earth in several respects. First, it is only 70% as far from…

A: To determine: Surface temperature.

Q: Use the terms luminous and illuminated to describe the visual relationship between the sun and the…

A: Luminous objects are generate their own light by the production of energy. Illuminated objects are…

Q: Assuming the angular resolution found for the HubbleTelescope , what is the smallest detail…

A: The expression for the resolving power is,

Q: What accounts for the large shadows cast by the ends of the thin legs of the water strider?

A: The large shadows are cast by the ends of the thin legs of the water strider.

Q: Can stars be seen from the moon’s surface in the daytime when the sun is shining?

A: On earth surface, there are atmosphere levels where scattering of sunlight occurs in daytime and…

Q: How will the color of the sky appear different on humid days compared to days of a low humidity?…

A: Generally we see the color of the sky is Blue. Actually the sky do not have any color. Color…

Q: What is an equiconvex lense?

A: A lens is made up of two curved surfaces which can be concave or convex surfaces. When both the…

Q: How is it possible to take photographs in complete darkness?

A: It is possible to take photograph in complete darkness.

Q: What diameter telescope (in m) would you need to observe Olympus Mons (624 km in diameter) from…

A: The expression for the required diameter of the telescope from equation of resolution of telescope…

Q: A typical hobby telescope has an objective lens with a 700 mm focal length and an eyepiece with a 25…

A: Given, Focal length of objective lens,fo=700 mm=70 cm,Focal length of eyepiece, fe=25 mm=2.5…

Q: What does Kitt Peak National Observatory mainly study in space?

A:

Q: What is an image? How it is formed?

A:

Q: Communications satellites 2 points could be just passive reflectors. * O True O False A typiçal…

A: Correct option :

Q: Astronauts observing from a space station need a telescope with a resolving power of 0.6 arc second…

A: The expression for the resolving power,   Substitute,

Q: Saturn has an angular diameter of 20 arcseconds (9.7×10-5 rad). You want to observe Saturn with a…

A: Given: The angular diameter of Saturn is 20 arcseconds. The focal length (fo) of the objective lens…

Q: Which technique is  used to improve the light gathering ability of microscopes?

A: There are many technique to improve the light gathering ability of microscopes  Mostly, Oil…