Physics-
General
Easy
Question
Sun rays are reflected from a horizontal mirror and fall on a vertical screen. A vertical object of height h is placed on the mirror as shown in the figure. Length of the shadow on the screen is
- h
- 2 h
- 3 h
- 4 h
The correct answer is: 2 h
Related Questions to study
physics-
Three plane mirrors are placed such that the angle between the first and second or second and third is the same ' 
'. A light striking the first mirror, after reflection at the three mirrors emerges opposite to the initial direction. Find the value of ' '.
Three plane mirrors are placed such that the angle between the first and second or second and third is the same ' '. A light striking the first mirror, after reflection at the three mirrors emerges opposite to the initial direction. Find the value of ' '.
physics-General
physics-
Calculate the deviation suffered by incident ray in situation as shown in figure after three successive reflections.
Calculate the deviation suffered by incident ray in situation as shown in figure after three successive reflections.
physics-General
physics-
Two mirrors, labeled IM for left mirror and RM for right mirror in the adjacent figure, are parallel to each other and 3.0 m apart. A person standing 1.0 m from the right mirror (RM) looks into this mirror and sees a series of images. How far from the person is the second closest image seen in the right mirror (RM) ?
Two mirrors, labeled IM for left mirror and RM for right mirror in the adjacent figure, are parallel to each other and 3.0 m apart. A person standing 1.0 m from the right mirror (RM) looks into this mirror and sees a series of images. How far from the person is the second closest image seen in the right mirror (RM) ?
physics-General
physics-
The effective focal length of the lens combinations shown in figure is -60 cm. The radii of curvature of the curved surfaces of the plano-convex lenses are 12 am each and refractive index of the material of the lens is 1.5. The refractive index of the liquid is
The effective focal length of the lens combinations shown in figure is -60 cm. The radii of curvature of the curved surfaces of the plano-convex lenses are 12 am each and refractive index of the material of the lens is 1.5. The refractive index of the liquid is
physics-General
physics-
A prism of glass (μ=1.5) is dipped in to water as shown in the figure. If the refractive index of water is 4/3, then the incident ray will be totally reflected if
A prism of glass (μ=1.5) is dipped in to water as shown in the figure. If the refractive index of water is 4/3, then the incident ray will be totally reflected if
physics-General
physics-
A transparent solid cylindrical rod has a refractive index of 
. It is surrounded by air. A light ray is incident at the midpoint of one end of the rod as shown in the figure The incident angle for which the light ray grazes along the wall of the rod is
A transparent solid cylindrical rod has a refractive index of . It is surrounded by air. A light ray is incident at the midpoint of one end of the rod as shown in the figure The incident angle for which the light ray grazes along the wall of the rod is
physics-General
chemistry-
Chlorobenzene can be prepared by reacting aniline with
Chlorobenzene can be prepared by reacting aniline with
chemistry-General
chemistry-
Carbon tetrachloride does not have net dipole moment because of
Carbon tetrachloride does not have net dipole moment because of
chemistry-General
chemistry-
For the various types of interactions, the correct order of increasing strength is
For the various types of interactions, the correct order of increasing strength is
chemistry-General
chemistry-
What is the ' X ' in given reaction 
What is the ' X ' in given reaction
chemistry-General
chemistry-
The unit cell with the structure given below represents…crystal system
The unit cell with the structure given below represents…crystal system
chemistry-General
maths-
Variance of the data given below
is-
Variance of the data given below
is-
maths-General
maths-
Median from the following distribution
is-
Median from the following distribution
is-
maths-General
maths-
Mean wage from the following data
is
Mean wage from the following data
is
maths-General
maths-
If 
is the mean of 
then mean of 
a where a is any number positive or negative is-
If is the mean of then mean of a where a is any number positive or negative is-
maths-General
