10th Maths SA2 Sample Paper 2017-18-6 and 10th Maths SA2 Sample Paper 2017-18-7 Download File For more paper visit 10th Sample Question paper 2018
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For more question paper from school exam visit 9th 2018 exam paper Download paper in pdf: 9th sci SDV Paper 2018
1. A man whose mass is 75kg walks up 10 steps, each 20cm high, in 5 second. Find the power he develops. 2. A radio station transmits wave of wavelength 280m If the speed of the wave is 3x108 m/s. Find the frequency of the wave emitted by the radio station. 3. A body of mass 10kg is dropped from a height of 20m. Find (i) its potential energy before it is dropped. (ii) its kinetic energy it is8m above the ground and (iii) its kinetic energy when it hits the ground. @jsuniltutorial.in 4. A tube-well pumps out 2400 kg out of water per minute if water is coming out with a velocity of 3m/s. What is the power of the pump? How much work is done if the pump runs for 10 hours? 5. Calculates the change that should be affected in the velocity of a body to maintain the same kinetic energy. If the mass of the body is increased four times. 6. The frequency of a body is 20 Hz. If the velocity of the waves produced is 340 m/s. Find the wavelength of the wave. 7. Two pistons of hydraulic press have diameters 24cm and 2cm. Calculate the force exerted by the longer piston when 40 kg wt. is placed on the smaller piston. 8. A ball is dropped from rest from a height of 12m. If the ball loses 25% of its KE on striking the ground what is the height to which it bounces? How do you account for the loss in K.E.?
Question paper 2018 class9 by SDV samastipur Download Pdf
Question: What is Zeeman effect Ans: The Zeeman effect is the splitting of the spectral lines of an atom in the presence of a strong magnetic field. The effect is due to the distortion of the electron orbitals because of the magnetic field. Question: What is Stark Effect in Atomic Spectra. Ans: The splitting of atomic spectral lines as a result of an externally applied electric field is called the Stark effect Question: why was gas at low pressure is taken during discharge tube experiment for discovery of electron? Ans: Gas at low pressure is taken during discharge tube experiment so that the electrons in the beam cannot be deflected if they hit molecules of gas. Question:if Rutherford mode is correct than why atom should collapse? Ans: if we apply magnetic theory to Rutherford model of atom then electron will loose energy continuously due to radiation when revolve around nucleus.Thus nucleus attract electron strongly and at last electron will fall in nucleus.Thus at last atom collapse. @%& All above questions are out of 9th curriculum. Download All subject class 09 Sample paper 2017-18
Courtesy ; DPS and website: www.opjsrgh.in For more paper visit : Sample paper 2018 class9
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