Water Vs Paper?️|| Normal Paper?️ Power ? || Easy experiment ?u200d? || #shorts #ebulljet #theexking

Two ideal gas thermometer A and B use oxygen and hydrogen respectively . The following observations are made: Temperature, Pressure therometer A, Pressure therometer B Triple point of water, 1.250xx10^(5)Pa , 0.200xx10^(5)Pa Normal melting point of sulphur, 1.797xx10^(5)Pa , 0.287xx10^(5)Pa (a) What is the absolute temperature of normal melting point of sulphur as read by thermometers A and B ? (b) What do you think is the reason for the slightly different answers from A and B ? (The thermometers are not faulty). what further procedure is needed in the experiment to reduce the discrepancy between the two readings.

Four students A, B, C and D selected the following items from the materials available in the science laboratory to perform an experiment to study the refraction of light through a glass slab : (A) convex lens, glass slab, pins, drawing board, white paper, scale (B) glass slab, pins, drawing board, scale, white paper, protractor (C) glass slab, glass prism, candle, screen, pins, scale, drawing board, protractor (D) concave mirror, pins, glass slab, protractor, white paper, drawing board Correct choice of the items required is made by the student :

When asked to set up an experiment to show that 'light is necessary for photosynthesis', a student ran to the school garden and set up the experiment by using a plant growing in the school garden. The experiment failed. His classmates made the following suggestions to get success in the experiment: Student A: Safranin should be used instead of iodine Student B: The leaf should not be boiled in alcohol to remove chlorophyll before testing for starch Student C: Transparent paper should be used instead of black paper strip Student D: The leaf should be destarched before before starting the experiment The correct suggestion is given by:

A student performs an experiment to determine the acceleration due to gravity g. The student throws a steel ball up with initial velocity u and measures the height h travelled by it at different times t. The graph the student should plot on a graph paper to readily obtain the value of g is

2mL of ethanoic acid was taken in each of test tube I and test tube II. A red litmus paper was introduced in test tube I and a pH paper was introduced in test tube II. The experiment was performed by four students A,B,C and D and they reported their observations as given below: The correct set of observations was made by the student:

In the shown figure, there are two long fixed parallel conducting rails (having negligible resistance) and are separated by distance L . A uniform rod of resistance R and mass M is placed at rest on frictionless rails. Now at time t = 0 , a capacitor having charge Q_(0) and capacitance C is connected across rails at ends a and b such that current in rod (c d) is from c towards d and the rod is released. A uniform and constant magnetic field having magnitude B exists normal to plane of paper as shown. (Neglect acceleration due to gravity) When the acceleration of rod is zero, the charge on capacitor is:

In the shown figure, there are two long fixed parallel conducting rails (having negligible resistance) and are separated by distance L . A uniform rod of resistance R and mass M is placed at rest on frictionless rails. Now at time t = 0 , a capacitor having charge Q_(0) and capacitance C is connected across rails at ends a and b such that current in rod (c d) is from c towards d and the rod is released. A uniform and constant magnetic field having magnitude B exists normal to plane of paper as shown. (Neglect acceleration due to gravity) When the acceleration of rod is zero, the speed of rod is :