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Ultravoilet light of wavelength 300 nm and intensity 1.0 W/m^2 falls on the surface of a photosensitive material. If one per cent of the incident photons produce photoelectrons,
12
Oct
Ultravoilet light of wavelength 300 nm and intensity 1.0 W/m^2 falls on the surface of a photosensitive material. If one per cent of the incident photons produce photoelectrons, Ultravoilet light of wavelength 300 nm and intensity 1.0 W/m^2 falls on the surface of a photosensitive material. If one per cent of the incident photons produce [...]
5. Factorise the following expressions. (i) p^2+6p+8
12
Oct
5. Factorise the following expressions. (i) p^2+6p+8 5. Factorise the following expressions. (i) p^2+6p+8 October 12, 2020 Category: Chapter 14 - Factorisation , Maths , NCERT Class 8 ,
Light of wavelength 0.6 mu m from a sodium lamp falls on a photocell and causes the emission of photoelectrons for which the stopping potential is 0.5 V. With light of wavelength
12
Oct
Light of wavelength 0.6 mu m from a sodium lamp falls on a photocell and causes the emission of photoelectrons for which the stopping potential is 0.5 V. With light of wavelength Light of wavelength 0.6 mu m from a sodium lamp falls on a photocell and causes the emission of photoelectrons for which the [...]
4.Factorise. (v) a^4–2a^2b^2+b^4
12
Oct
4.Factorise. (v) a^4–2a^2b^2+b^4 4.Factorise. (v) a^4–2a^2b^2+b^4 October 12, 2020 Category: Chapter 14 - Factorisation , Maths , NCERT Class 8 ,
4.Factorise. (iv) x^4–(x–z)^4
12
Oct
4.Factorise. (iv) x^4–(x–z)^4 4.Factorise. (iv) x^4–(x–z)^4 October 12, 2020 Category: Chapter 14 - Factorisation , Maths , NCERT Class 8 ,
4.Factorise. (iii) x^4–(y+z)^4
12
Oct
4.Factorise. (iii) x^4–(y+z)^4 4.Factorise. (iii) x^4–(y+z)^4 October 12, 2020 Category: Chapter 14 - Factorisation , Maths , NCERT Class 8 ,
4.Factorise. (ii) p^4–81
12
Oct
4.Factorise. (ii) p^4–81 4.Factorise. (ii) p^4–81 October 12, 2020 Category: Chapter 14 - Factorisation , Maths , NCERT Class 8 ,
4.Factorise. (i) a^4 – b^4
12
Oct
4.Factorise. (i) a^4 – b^4 4.Factorise. (i) a^4 – b^4 October 12, 2020 Category: Chapter 14 - Factorisation , Maths , NCERT Class 8 ,
3. Factorise the expressions. (viii) 10ab+4a+5b+2
12
Oct
3. Factorise the expressions. (viii) 10ab+4a+5b+2 3. Factorise the expressions. (viii) 10ab+4a+5b+2 October 12, 2020 Category: Chapter 14 - Factorisation , Maths , NCERT Class 8 ,
Threshold frequency for a certain metal is v0. When light of frequency 2 V0 is incident on it, the maximum velocity of photoelectrons is 4 * 10^8 cm/s. If frequency of incident radiation
12
Oct
Threshold frequency for a certain metal is v0. When light of frequency 2 V0 is incident on it, the maximum velocity of photoelectrons is 4 * 10^8 cm/s. If frequency of incident radiation the maximum velocity of photoelectrons is 4 * 10^8 cm/s. If frequency of incident radiation Threshold frequency for a certain metal is [...]