For doing his experiment on verifying the laws of reflection of sound, a student sets up his apparatus .
The experiment is more likely to get performed successfully if the screen shows is a :
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While performing an experiment on verifying the laws of reflection of sound (Fig. 6.18), how can the reflected sound be detected better ?

While doing experiment on verifying the laws of reflection of sound, four students measured the angle lt I and lt r . The correct measurement of the angles of incidence and angle of reflections has been done by student :

While performing an experiment on verifying the laws of reflection of sound, a students is to choose between (i) a narrow or a wide tube, and (ii) is strong or a faint source of sound. The observed experimental difference, between the values of angle of incidence and angle of reflection, is likely to be minimum when he chooses a:

While performing an experiment on determining the focal length of a convex lens, a student obtains a sharp inverted image of the laboratory window grill on the screen and measures the distance between the screen and the lens. She then repeats the experiment and takes a distant tree as the object in the second case. In order to get a sharp image of the tree on the screen, she will now have to move the screen :

Describe an experiment to show that sound waves can be reflected. What are the laws of reflection of sound waves.

A student is working on a science project and is going through each step of the scientific method after the student conducts his or her first experiment and records the result of the experimental test what according to you should the student do next

While performing the experiment on the determination of focal length of a convex lens, four students obtained the image of the same distant tree on the screen : Which diagram shows the formation of image correctly ?

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: