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5.Express each of the following as product of powers of their prime factors: (iv) 3,600
10
Oct
5.Express each of the following as product of powers of their prime factors: (iv) 3,600 5.Express each of the following as product of powers of their prime factors: (iv) 3 600 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
Monochromatic light of wavelength of 600 nm is used in YDSE. One of the slits is covered by a transparent sheet of thickness 1.8 * 10^-5 m made of a material of refractive index
10
Oct
Monochromatic light of wavelength of 600 nm is used in YDSE. One of the slits is covered by a transparent sheet of thickness 1.8 * 10^-5 m made of a material of refractive index Monochromatic light of wavelength of 600 nm is used in YDSE. One of the slits is covered by a transparent sheet [...]
5.Express each of the following as product of powers of their prime factors: (iii) 540
10
Oct
5.Express each of the following as product of powers of their prime factors: (iii) 540 5.Express each of the following as product of powers of their prime factors: (iii) 540 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
5.Express each of the following as product of powers of their prime factors: (ii) 405
10
Oct
5.Express each of the following as product of powers of their prime factors: (ii) 405 5.Express each of the following as product of powers of their prime factors: (ii) 405 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
Distance between the slits shown in figure is d = 20 lemda, where lemda is the wavelength of light used. Find the angle theta where (a) central maxima (where path difference is zero ) is obtained, and
10
Oct
Distance between the slits shown in figure is d = 20 lemda, where lemda is the wavelength of light used. Find the angle theta where (a) central maxima (where path difference is zero ) is obtained, and AND Distance between the slits shown in figure is d = 20 lemda where lemda is the wavelength [...]
5.Express each of the following as product of powers of their prime factors: (i) 648
10
Oct
5.Express each of the following as product of powers of their prime factors: (i) 648 5.Express each of the following as product of powers of their prime factors: (i) 648 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
A sphere of radius 0.1 m and mass 8 π kg is attached to the lower end of a steel wire of length 5.0 m and diameter 10^−3. The wire is suspended from 5.22 m high ceiling of a room . When the sphere is made to swing as a simple pendulum, it just grazes the floor at its lowest point. Calculate the velocity of the sphere at the lowest position .
10
Oct
A sphere of radius 0.1 m and mass 8 π kg is attached to the lower end of a steel wire of length 5.0 m and diameter 10^−3. The wire is suspended from 5.22 m high ceiling of a room . When the sphere is made to swing as a simple pendulum, it just grazes [...]
4.Identify the greater number, wherever possible, in each of the following: (v) 2^10 or 10^2
10
Oct
4.Identify the greater number, wherever possible, in each of the following: (v) 2^10 or 10^2 4.Identify the greater number in each of the following: (v) 2^10 or 10^2 wherever possible October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
In YDSE with D = 1 m, d = 1 mm, light of wavelength 500 nm is incident at an angle of 0.57 w.r.t. the axis of symmetry of the experimental set-up. If center of symmetry of screen
10
Oct
In YDSE with D = 1 m, d = 1 mm, light of wavelength 500 nm is incident at an angle of 0.57 w.r.t. the axis of symmetry of the experimental set-up. If center of symmetry of screen d = 1 mm In YDSE with D = 1 m light of wavelength 500 nm is [...]
A very stiff bar (AB) of negligible mass is suspended horizontally by two vertical rods as shown in figure. Length of the bar is 2.5 L. The steel rod has length L and cross sectional radius of r and the brass rod has length 2L and cross sectional radius of 2r . A vertically downward force F is applied to the bar at a distance x from the steel rod and the bar remains horizontal. Find the value of x if it is given that ratio of Young’s modulus of steel and brass is Ys/YB = 2.
10
Oct
A very stiff bar (AB) of negligible mass is suspended horizontally by two vertical rods as shown in figure. Length of the bar is 2.5 L. The steel rod has length L and cross sectional radius of r and the brass rod has length 2L and cross sectional radius of 2r . A vertically downward [...]