Cengage JEE Mains Physics by B.M Sharma
A ray of light passes from glass, having a refractive index of 1.6 to air. The angle of incidence for which the angle of refraction is twice the angle of incidence is
13
Nov
A ray of light passes from glass, having a refractive index of 1.6 to air. The angle of incidence for which the angle of refraction is twice the angle of incidence is A ray of light passes from glass having a refractive index of 1.6 to air. The angle of incidence for which the angle [...]
What should be the value of distance d so that final image is formed on the object itself. (Focal lengths of the lenses are written on the lenses.)
13
Nov
What should be the value of distance d so that final image is formed on the object itself. (Focal lengths of the lenses are written on the lenses.) What should be the value of distance d so that final image is formed on the object itself. (Focal lengths of the lenses are written on the [...]
Behind a thin converging lens having both the surfaces of the same radius 10 cm, a plane mirror has been placed. The image of an object at a distance of 40 cm from the lens is formed at the same position. What is the refractive index of the lens?
13
Nov
Behind a thin converging lens having both the surfaces of the same radius 10 cm, a plane mirror has been placed. The image of an object at a distance of 40 cm from the lens is formed at the same position. What is the refractive index of the lens? a plane mirror has been placed. [...]
A beam of light propagates through a medium 1 and falls onto another medium 2, at an angle α 1 as shown in Fig. After that, it propagates in medium 2 at an angle α2 as shown. The light’s wavelength in medium 1 is λ1. What is the wavelength of light in medium 2?
13
Nov
A beam of light propagates through a medium 1 and falls onto another medium 2, at an angle α 1 as shown in Fig. After that, it propagates in medium 2 at an angle α2 as shown. The light’s wavelength in medium 1 is λ1. What is the wavelength of light in medium 2? A [...]
A thin equiconvex lens (μ=3/2) of focal length 10 cm is cut and separated and a material of refractive index 3 is filled between them. What is the focal length of the combination?
13
Nov
A thin equiconvex lens (μ=3/2) of focal length 10 cm is cut and separated and a material of refractive index 3 is filled between them. What is the focal length of the combination? A thin equiconvex lens (μ=3/2) of focal length 10 cm is cut and separated and a material of refractive index 3 is [...]
Light is incident on a glass block as shown in Fig. If θ1 is increased slightly, what happens to θ 2 ?
13
Nov
Light is incident on a glass block as shown in Fig. If θ1 is increased slightly, what happens to θ 2 ? Light is incident on a glass block as shown in Fig. If θ1 is increased slightly what happens to θ 2 ? November 13, 2020 Category: Cengage JEE Mains Physics by B.M Sharma [...]
You are given two identical plano-convex lenses. When you place an object 20cm to the left of a single plano-convex lens, the image appears 40cm to the right of the lens. You then arrange the two plano-convex lenses back to back to form a double convex lens. If the object is 20cm to the left of this new lens, What is the approximate location of the image?
13
Nov
You are given two identical plano-convex lenses. When you place an object 20cm to the left of a single plano-convex lens, the image appears 40cm to the right of the lens. You then arrange the two plano-convex lenses back to back to form a double convex lens. If the object is 20cm to the left [...]
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the image appears 40cm to the right of the lens. You then arrange the two plano-convex lenses back to back to form a double convex lens. If the object is 20cm to the left of this new lens ,
What is the approximate location of the image? ,
You are given two identical plano-convex lenses. When you place an object 20cm to the left of a single plano-convex lens ,
Two simple harmonic motion are represented by equations-duplicate-1
05
Nov
Two simple harmonic motion are represented by equations-duplicate-1 Two simple harmonic motion are represented by equations November 5, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 15 - Oscillation and SHM ,
A string under a tension of 100 N , emitting its fundamental mode , gives 5beats/s with a tuning fork. When the tension is increased to 121 N, again 5 beats/s are heard. The frequency of the fork is-duplicate-1
05
Nov
A string under a tension of 100 N , emitting its fundamental mode , gives 5beats/s with a tuning fork. When the tension is increased to 121 N, again 5 beats/s are heard. The frequency of the fork is-duplicate-1 A string under a tension of 100 N again 5 beats/s are heard. The frequency of [...]
Figure 7.88 shows a stretched string of length L and pipes of length L,2L,L/2andL/2 in options (a) , (b), (c ) and (d) respectively . The string ‘s tension is adjusted until the speed of waves on the string equals the speed of sound waves in the air . The fundamental mode of oscillation is the set up on the string . In which pipe will the sound produced by the string cause resonance ?
29
Oct
Figure 7.88 shows a stretched string of length L and pipes of length L,2L,L/2andL/2 in options (a) , (b), (c ) and (d) respectively . The string ‘s tension is adjusted until the speed of waves on the string equals the speed of sound waves in the air . The fundamental mode of oscillation is [...]