The photosynthetic lamellae taken out from a chloroplast and suspended in a nutrient medium in the presence of `CO_2` and light. Will they synthesize sugar or not?

A block A of mass m_(1) rests on a horizontal table. A light string connected to it passes over a frictionless pulley at the edge of table and from its other end another block B of mass m_(2) is suspended. The coefficient of knetic friction between the block and table is mu_(k) . When the block A is sliding on the table, the tension in the string is.

The figure shows the path of ray of light propagating from medium 1 to medium 2.The refractive index of medium 1 with respect to medium 2 is___

A bullet of mass 10g moving horizontally with a velocity of 400 ms^(-1) strikes a wooden block of mass 2 kg which is suspended by a light inextensible string of length 5m . As a result, the center of gravity of the block is found to rise a vertical distance of 10cm . The speed of the bullet after it emerges out hirizontally from the block will be

If the ray of light travels from medium 1 to medium 2 and ultimately reverses its path then the phenomenon is _____

If light is cut and CO_2 supply is continued, then which of the following substance will get disappeared from photosynthesizing algal cells?

Read the statements given below and identify the concepts explained in them. When Reema observes a light ray coming from medium 2 into medium 1, she sees that the ray bends away from the normal while entering the medium 1. Which medium in this case is optically rarer?

A uniform string of length 20 m is suspended from a rigid support. A short wave pulse is introduced at its lowest end. It starts moving up the string. The time taken to reach the support is (take g = 10 ms^(-2) )

A light rod of length 200 cm is suspended from the ceiling horizontally by means of two vertical wires of equal length tied on its end. One of the wires is made of steel and has area of cross-section 0.1 cm^2 and the order of brass of cross-sectional area 0.2 cm^2. An object of mass m is hung to the rod. (Y_"steel"=2xxY_"brass") At which distance from one end of the rod should a weight be hung to produce equal strains in both the wires?

A beam of light propagating at an angle alpha_(1) from a medium 1 to another medium 2 at an angle alpha_(2) . If the wavelength of light in medium 1 is lambda_(1) . The wavelength of light in medium 2, (lambda_(2) , is