A 100 W bulb working on 200 V and a 200 W bulb on 100 V, have their resistances in the ratio

The plates of a parallel plate capacitor are separated by a distance d with air as medium between the plates. In order to increase its capacitance by 60%, a slab of dielectric constant 5 having the same area as that of plates is introduced between the plates. The thickness of the dielectric slab is :

A semiconductor device is connected in series circuit with a battery and resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops at almost zero. The device may be

Which one among the following shows particle nature of light?

An equiconvex lens has a focal length of 20 cm and its radius of curvature is 30 cm. Its refractive index is

How can fringe width increase in Young's double slit experiment?

igure given below shows variation of photocurrent with anode potential for different intensities of incident radiation. Some of the results obtained from the experiments are described below on the basis of the graph. Identify the correct results:

(A) The photoelectric current is higher for higher intensity of the incident radiation.
(B) The negative potential required to decrease the photocurrent at different intensities to zero is different.
(C) If the positive potential of the anode is increased beyond a certain value, the photocurrent does not increase for a given intensity.
(D) If the potential applied at the anode is zero, then the photocurrent is lower than the maximum value of current for the given intensity.
Choose the correct answer from the options given below:

In malignant tumor, the cells proliferate, grow very rapidly and move to other parts of body to form new tumors. This property is called:

In the given reaction \(CH_3CH_2OH + HCl \xrightarrow{Anhy ZnCl_2} X \xrightarrow{KCN(alc)} Y \xrightarrow{Na/Alcohol} Z\) \(Y\) and \(Z\) are:

Match List I with List - II.

List - I	List - II
(A) Lepidopteran	(I) Beetles
(B) Coleopterans	(II) Meloidegyne incognitia
(C) Dipterans	(III) Tobacco budworm
(D) Nematode	(IV) Agrobacterium
	(V) Flies and mosquitoes

Choose the correct answer from the options given below:

Match List-l with List-ll

List-l (Disease)	List-II (Characteristic symptoms)
(A) Malaria	(I) Inflammation of lower limb
(B) Filariasis	(II) Cycles of fever
(C) Ringworms	(III) Blood clots and excess mucus in stools
(D) Amoebiasis	(IV) Scaly lesions on nails

Choose the correct answer from the options given below:

The area of the region \(\left\{(x, y): y \geq x^2\right.\) and \(\left.y \leq|x|\right\}\) is

Identify the statements which are incorrect with respect to medical termination of pregnancy:
(A) MTP is relatively safe during the first trimester of pregnancy
(B) Govt. of India legalised MTP in 1981
(C) MTP is misused to get rid of desired sex determined through amniocentesis
(D) MTP is essential in cases where foetus is found to carrying harmful genes
Choose the correct answer from the options given below: