Explanation

Light intensity refers to the amount of light energy reaching a plant's surface per unit time.

This directly impacts the rate of photosynthesis as more light energy available means more ATP and NADPH can be produced, driving the Calvin cycle

Higher light intensity generally leads to increased photosynthetic activity. 

Explanation

To obtain greater dispersion by a diffraction grating, the slit separation should be decreased. 

Dispersion:

• In diffraction gratings, dispersion is the separation of light wavelengths during diffraction, with greater dispersion resulting in wider color separation.

Slit separation:

• The distance between individual slits on the grating is called the slit separation.

Relationship between slit separation and dispersion:

• Smaller slit separations lead to larger angles of diffraction for a given wavelength, resulting in greater dispersion.
• Imagine the light waves as being "bent" more by the closer slits, causing them to spread out further

Explanation

Rotational kinetic energy of a disc about its center:  

K.E = (1/2) I ω², where I = moment of inertia.

For a disc, I = (1/2)MR²,  

So, K.E = ½ × (½ MR²) × ω² = ¼ MR²ω²

If linear velocity v = Rω, then  

K.E = ¼ Mv²

Explanation

In Simple Harmonic Motion (S.H.M.), frequency is a constant and does not depend on the particle's position (mean or extreme).

• At the mean position, the velocity is maximum, and the acceleration is zero, but the frequency remains constant throughout the motion.

Explanation

N2 (Nitrogen) has the highest critical temperature among the options (Helium - He and Hydrogen - H). 

Nitrogen (N2): While still lower than many other substances

It has a higher critical temperature than Helium because of stronger intermolecular forces. 

Explanation

Citric acid is commonly found in citrus fruits like oranges and lemons.

Grapes contain small amounts, but mango is not a significant source of citric acid;

It contains more malic and tartaric acids instead.

Explanation

The term freedom to make decisions about oneself refers to autonomy.

Autonomy involves the ability to make independent choices and control over one's own life.

Explanation

Platelets play a major role in blood clotting. 

It is also called thrombocytes and the body's natural bandage to stop bleeding.

They are produced from huge bone marrow cells called megakaryocytes.

Explanation

To find the hidden secrets under the water,

the ships and submarines use the Sonar system.

Sonar uses sound waves to 'see' in the water.

There are two types of sonar—active and passive.

Explanation

Thermochemistry is the study of chemical reactions and the energy changes that involve heat.

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RY24012023