Description : What is the main focus of spherical mirror ?
Last Answer : : The point at which the rays of light parallel to the main axis of the spherical mirror meet at the point above the main axis (in the concave mirror) or appear to be moving away from the point above the main axis (in the convex mirror) is called the main focus of the spherical mirror.
Description : The centre of the reflecting surface of a spherical mirror is called the : (1) Radius (2) Centre of Curvature (3) Pole (4) Focus
Last Answer : (3) Pole Explanation: The center of the reflecting surface of a spherical mirron is called as the pole of the mirror which is mainly known as the center of curvature.
Description : The mirror used for the head light of a car is – (1) spherical concave (2) plane (3) cylindrical (4) parabolic concave
Last Answer : (4) parabolic concave Explanation: A parabolic (or paraboloid or paraboloidal) reflector(or dish or mirror) is a reflective surface used to collect or project energy such as light, sound, or radio waves.
Description : A real image can be formed by which of the following single mirrors? w) a plane mirror x) a concave spherical mirror y) a convex spherical mirror
Last Answer : ANSWER: X -- A CONCAVE SPHERICAL MIRROR
Description : A virtual image can be formed by one or more of the following single mirrors? Identify them. w) plane mirror x) concave spherical mirror y) convex spherical mirror z) all of the above
Last Answer : ANSWER: Z -- ALL OF THE ABOVE (accept: A, B and C)
Description : The focal length of a concave spherical mirror is equal to 1 meter. What is the radius of curvature of this mirror?
Last Answer : ANSWER: 2 METERS
Description : 4. A spherical mirror and a thin spherical lens have a focal length of -15 cm. The mirror and the lens are likely to be -Physics-10
Last Answer : (a) Both are likely to be concave.
Description : 2. The radius of curvature of a spherical mirror is 20 cm. What is its focal length? -Physics-10
Last Answer : Radius of curvature (R) = 20 cm Radius of curvature of the spherical mirror = 2 × Focal length (f) R = 2f f= R/2 = 20 / 2 = 10 Therefore, the focal length of the spherical mirror is 10 cm.
Description : What is the midpoint of the reflector surface of a spherical mirror called ?
Last Answer : The center point of the reflecting surface of a spherical mirror is called pole.
Description : What are the secondary axes of a spherical mirror ?
Last Answer : - Innumerable
Last Answer : any Smooth Sphere Surface Part From If Light Regular Reflection Happens However Him Spherical It is called Spherical Mirror .
Description : When an object is placed at a distance of `60 cm` from a convex spherical mirror, the magnification produced is `1//2`. Where should the object be pla
Last Answer : When an object is placed at a distance of `60 cm` from a convex spherical mirror, the magnification ... placed to get a magnification of `1//3` ?
Description : What is mirror formula .explain magnification in case of spherical mirror?
Last Answer : Need answer
Description : The type of mirror used in the headlamps of cars is the (a) plane mirror (b) spherical convex mirror (c) spherical concave mirror (d) parabolic concave mirror
Last Answer : Ans:(d)
Description : The real image formed by a spherical mirror is ____ relative to its object a. Erect b. Inverted c. Smaller d. Larger
Last Answer : d. Larger
Description : The real image formed by a spherical mirror is ____ relative to its object ∙ a. Erect ∙ b. Inverted ∙ c. Smaller ∙ d. Larger
Description : 147 A ray directed towards the centre of curvature of a spherical mirror a) become parallel to principal axis b)retraces its path c)appears to diverge from focus d)passes through focus.
Last Answer : b)retraces its path
Description : Why does rifling improve the accuracy of a spherical bullet?
Last Answer : As I recall and I could be wrong but the spin allowed for a more predictable flight path… in kinda the same way a pitch is manipulated… or not… by a pitcher in baseball. Dictating the spin sorta dictates the eventual flight path…
Description : What kind of reflection occurs on a spherical surface and why ?
Last Answer : Regular reflection of light occurs on the spherical surface. This is because a bunch of parallel light rays incident on a spherical smooth surface, after reflection, converts into converging or diverging rays and produces reflections.
Description : Knot is a measure of – (1) The speed of ship (2) The curvature of spherical objects (3) Solar radiation (4) Intensity of earthquake shock
Last Answer : (1) The speed of ship Explanation: The knot (pronounced not) is a unit of speed equal to one nautical mile (1.852 km) per hour, approximately 1.151 mph. There is no standard abbreviation but km is commonly used. The knot is a non-SI unit accepted for use with the International System of Units (SI).
Description : A drop of liquid assumes spherical shape because: (1) Intermolecular forces are strong in liquids (2) A sphere has the least surface area for a given volume (3) A sphere has the largest surface area for a given volume (4) Inter molecular forces are weak in liquids
Last Answer : (2) A sphere has the least surface area for a given volume Explanation: A drop of liquid assumes spherical shape because a sphere has the least surface area for a given volume.
Description : On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because (1) Mercury is a metal (2) Density of mercury is greater than that ... is greater than its adhesion with glass (4) Cohesion of water is greater than its adhesion with glass
Last Answer : (3) Cohesion of mercury is greater than its adhesion with glass Explanation: When liquid is placed on a smooth surface like glass plate, the relative strengths of the cohesive and adhesive forces acting on ... and a surface are stronger, they will pull the liquid down, causing it to wet the surface.
Description : A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will - (1) increase (2) decrease (3) remain unaffected (4) have its shape changed
Last Answer : (1) increase Explanation: The metal ball can be considered to be made up of several layers of thinner ones. On heating each of these layers will increase in radius.
Description : Rain drops acquire spherical shape due to - (1) viscosity (2) surface tension (3) friction (4) elasticity
Last Answer : (2) surface tension Explanation: The Surface tension pulls the surface of the drop equally at all points thus produces the spherical shape having the minimum surface area.
Description : A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will - (1) Increase (2) decrease (3) remain unaffected (4) have its shape changed
Last Answer : (1) Increase Explanation: The metal ball can be considered to be made up of several layers of thinner ones. On heating each of these layers will increase in radius. As the inner most layer also increases its radius, the volume inside it i.e, the volume of the hollow portion will also increase.
Description : Water drops are spherical because of - (1) viscosity (2) density (3) polarity (4) surface tension
Last Answer : (4) surface tension Explanation: Surface tension is responsible for the shape of liquid droplets. Although easily deformed, droplets of water tend to be pulled into a spherical shape by ... absence of other forces, including gravity, drops of virtually all liquids would be approximately spherical.
Description : Knot is a measure of – (1) Unit of speed (2) the curvature of spherical objects (3) solar radiation (4) intensiry of earthquake shock
Last Answer : (1) Unit of speed Explanation: The Knot is a unit of speed equal to one nautical mile per hour. The ISO standerd symbol for the knot is Kn.
Description : Small bubbles are perfectly spherical because of – (1) Gravity (2) Pressure (3) Viscosity (4) Surface tension
Last Answer : (4) Surface tension Explanation: Surface tension is responsible for the shape of liquid droplets. Although easily deformed, droplets of water tend to be pulled into a spherical shape by the cohesive ... shape minimizes the necessary "wall tension" of the surface layer according to Laplace's law.
Description : The type of mirrors used in the headlamp of cars is – (1) Parabolic concave (2) Plane (3) Spherical convex (4) Cylindrical concave
Last Answer : (1) Parabolic concave Explanation: Curved mirror that reflects light from its inner surface, the curve being inward. It may be either circular or parabolic in section. A concave mirror converges parallel light ... is not too close to the mirror. A real image is formed at the point of convergence.
Description : A spherical ball made of steel when dropped in mercury container will – (1) sink in mercury (2) will be on the surface of mercury (3) will be partly immersed mercury (4) will dissolve in mercury
Last Answer : (2) will be on the surface of mercury Explanation: The density of steel usually ranges between 7.75 and 8.05 g/cm3 and the density of mercury is 13.534 g/cm3. Mercury ... materials usually have different densities, so density is an important concept regarding buoyancy, purity and packaging.
Description : A falling drop of rain water ac-quires the spherical shape due to – (1) Viscosity (2) Surface Tension (3) Atmospheric pressure (4) Gravitational force
Last Answer : (2) Surface Tension Explanation: Raindrops start out as round high in the atmosphere as water collects on dust and smoke particles in clouds. But as raindrops fall, they lose their rounded ... the molecules stick together. The cause is the weak hydrogen bonds that occur between water molecules.
Description : What reflecting surface forms a geometrically perfect image of a point source located at infinity (such as that approximated by a star)? w) Paraboloid x) Ellipsoid y) spherical z) Hyperboloid
Last Answer : ANSWER: W -- PARABOLOID
Description : A perfectly spherical bubble of air is suspended in a tank of water. A beam of light consisting of parallel rays passes through the bubble. As the light emerges from the opposite side of the bubble the light rays: w) diverge x) converge y) are unaffected
Last Answer : ANSWER: W -- DIVERGE
Description : An electromagnetic wave is ALWAYS: w) longitudinal x) polarized y) spherical z) transverse.
Last Answer : ANSWER: Z -- TRANSVERSE
Last Answer : Cohesion of mercury is greater than its adhesion with glass
Last Answer : A sphere has the least surface area for a given volume
Description : Small bubbles are perfectly spherical because of (1) Gravity (2) Pressure (3) Viscosity (4) Surface tension
Last Answer : Surface tension
Description : A spherical ball made of steel when dropped in mercury container will (1) sink in mercury (2) will be on the surface of mercury (3) will be partly immersed mercury (4) will dissolve in mercury
Last Answer : will be on the surface of mercury
Description : A falling drop of rain water acquires the spherical shape due to (1) Viscosity (2) Surface Tension (3) Atmospheric pressure (4) Gravitational force
Last Answer : Surface Tension
Description : The type of mirrors used in the headlamp of cars is (1) parabolic concave (2) plane (3) spherical convex (4) cylindrical concave
Last Answer : parabolic concave
Description : Knot is a measure of (1) The speed of ship (2) The curvature of spherical objects (3) Solar radiation (4) Intensity of earthquake shock
Last Answer : The speed of ship
Description : When you hold a mirror in front of another mirror, do the repeated images that are reflected back go on forever?
Last Answer : Ha! You’ve received more Great Questions than answers! That’s funny! GQ, by the way To be honest, I’ve wondered this some time in my life. I don’t think I have an answer, but great question! (: I want to try this now!
Description : Why do you need glasses to look in a mirror?
Last Answer : Let's say the object you are looking at is 12 feet behind you, and you hold the mirror 1 foot in front of your face. The light path from the object to your eye is 14 feet. You would be ... path would be only 12 feet.The object appears 13 feet behind the mirror, which is 1 foot from your face.
Description : Draw the ray diagram in each case to show the position and nature of the image formed when the object is placed: (i) at the centre of curvature of a concave mirror (ii) between the pole P and focus F of ... front of a convex mirror (iv) at 2F of a convex lens (v) in front of a concave lens -Physics
Last Answer : Answer. Nature of image: Real, inverted and same size image is formed at the centre of curvature. Nature of image: Virtual, enlarged and erect image is formed behind the mirror. Nature of image: Virtual ... : Virtual, erect and diminished image is formed between O and F on the same side of object.
Description : Which mirror is used in solar cooker ?
Last Answer : Concave mirrors are used in solar cookers.
Description : Which mirror is used to avoid an accident at a bend in a mountain road ?
Last Answer : Plane mirrors are used to avoid accidents on hilly road bends.
Description : What is the reflection of the mirror used in dental treatment ?
Last Answer : Unreal and magnified reflections are formed in the mirror used for dental treatment.
Description : What is Gaelic Mirror ?
Last Answer : : We have all seen ordinary equal mirrors but we cannot all see the real Gaelic mirror. However, the main point of the Gaelic mirror, but a lot can be seen in the shiny new spoon. ... will be concave or convex galvanized mirror depending on which surface will be coated with silver or aluminum.
Description : Which mirror is used in the head light of a car ?
Last Answer : Concave mirrors are used in automobile headlights.