Physics-
General
Easy
Question
A light ray gets reflected from a pair of mutually perpendicular mirrors, not necessarily along axes. The intersection point of mirrors is at origin. The incident light is along y = x + 2. If the light ray strikes both mirrors in succession, then it may get reflected finally along the line:
- y = 2x – 2
- y = – x + 2
- y = – x – 2
- y = x – 4
The correct answer is: y = x – 4
Related Questions to study
physics-
A glass prism of refractive index 1.5 is immersed in water ( = 4/3). Light beam incident normally on the face AB is totally reflected to reach the face BC if
A glass prism of refractive index 1.5 is immersed in water ( = 4/3). Light beam incident normally on the face AB is totally reflected to reach the face BC if
physics-General
physics-
A slab of high quality flat glass, with parallel faces, is placed in the path of a parallel light beam before it is focussed to a spot by a lens. The glass is rotated slightly back and forth from the vertical orientation, about an axis out of the page as shown in the figure. According to ray optics the effect on the focussed spot is:
A slab of high quality flat glass, with parallel faces, is placed in the path of a parallel light beam before it is focussed to a spot by a lens. The glass is rotated slightly back and forth from the vertical orientation, about an axis out of the page as shown in the figure. According to ray optics the effect on the focussed spot is:
physics-General
physics-
A ray of light strikes a corner reflector as shown in figure. As the angle of incidence q is increased, the angle between the final reflected ray and the incident ray
A ray of light strikes a corner reflector as shown in figure. As the angle of incidence q is increased, the angle between the final reflected ray and the incident ray
physics-General
physics-
A ball of mass m is attached to a rigid vertical rod by means of two massless strings with length L. The strings are attached to the rod at points a distance L apart (see Figure). The system is rotating about the axis of the rod, both strings being taut and forming an equilateral triangle. The tension in the upper string is T1
A ball of mass m is attached to a rigid vertical rod by means of two massless strings with length L. The strings are attached to the rod at points a distance L apart (see Figure). The system is rotating about the axis of the rod, both strings being taut and forming an equilateral triangle. The tension in the upper string is T1
physics-General
physics-
Two identical resistors with resistance R are connected in the two circuits drawn. The battery in both circuits is a 12 volt ideal battery. Which statement is correct?
Two identical resistors with resistance R are connected in the two circuits drawn. The battery in both circuits is a 12 volt ideal battery. Which statement is correct?
physics-General
physics-
The equivalent resistance between the terminal points A and B in the network shown in figure is
The equivalent resistance between the terminal points A and B in the network shown in figure is
physics-General
physics-
A hollow conducting sphere of inner radius R and outer radius 2R has resistivity '' a function of the distance 'r' from the centre of the sphere: . The inner and outer surfaces are painted with a perfectly conducting 'paint' and a potential difference is applied between the two surfaces. Then, as 'r' increases from R to 2R, the electric field inside the sphere
A hollow conducting sphere of inner radius R and outer radius 2R has resistivity '' a function of the distance 'r' from the centre of the sphere: . The inner and outer surfaces are painted with a perfectly conducting 'paint' and a potential difference is applied between the two surfaces. Then, as 'r' increases from R to 2R, the electric field inside the sphere
physics-General
physics-
If I = 80 mA, determine the magnitude of the current in the resistor
If I = 80 mA, determine the magnitude of the current in the resistor
physics-General
physics-
Four wires A, B, C and D are made of different materials. They each carry the same current I. Wire B has twice the length of other wires. Wire C has twice the internal electric field of other wires. Wire D has twice the diameter of other wires. Other than these differences, all wires share identical characteristics. Rank the conductivities of these materials, from greatest to least
Four wires A, B, C and D are made of different materials. They each carry the same current I. Wire B has twice the length of other wires. Wire C has twice the internal electric field of other wires. Wire D has twice the diameter of other wires. Other than these differences, all wires share identical characteristics. Rank the conductivities of these materials, from greatest to least
physics-General
physics-
A hollow cylinder with inner radius R, outer radius 2R mass M is rolling with speed of its axis v. Its kinetic energy is
A hollow cylinder with inner radius R, outer radius 2R mass M is rolling with speed of its axis v. Its kinetic energy is
physics-General
physics-
Four identical bulbs each rated 100 watts, 220 volts are connected across a battery as shown. The power consumed by them is:
Four identical bulbs each rated 100 watts, 220 volts are connected across a battery as shown. The power consumed by them is:
physics-General
physics-
Resistors R1 and R2 have an equivalent resistance of 6 ohms when connected in the circuit shown below. The resistance of R1 could be
Resistors R1 and R2 have an equivalent resistance of 6 ohms when connected in the circuit shown below. The resistance of R1 could be
physics-General
physics-
In the two circuits shown, all the light bulbs and batteries are identical. If A, B and C respectively denotes the brightness of light bulbs A, B & C then
In the two circuits shown, all the light bulbs and batteries are identical. If A, B and C respectively denotes the brightness of light bulbs A, B & C then
physics-General
physics-
Two strings support a uniform rod as shown. String at end B is cut. Which of the following is true just after cut
I] initial acceleration of A is vertical
II] initial acceleration of A is horizontal
III] initial acceleration of centre of mass of rod is vertical
IV] initial acceleration of centre of mass of rod is horizontal
Two strings support a uniform rod as shown. String at end B is cut. Which of the following is true just after cut
I] initial acceleration of A is vertical
II] initial acceleration of A is horizontal
III] initial acceleration of centre of mass of rod is vertical
IV] initial acceleration of centre of mass of rod is horizontal
physics-General
physics-
The potential of point O in the steady state circuit shown on the right is
The potential of point O in the steady state circuit shown on the right is
physics-General