Question Paper (Section wise)

Photons with energy 5 eV are incident on a cathode C in a photoelectric cell. The maximum energy of emitted photoelectrons is 2 eV. When photons of energy 6 eV are incident on C, no photoelectrons will reach the anode A, if the stopping potential of A relative to C is

A rigid ball of mass m strikes a rigid all at 60° and gets reflected without loss of speed as shown in the figure below. The value of impulse imparted by the wall on the ball will be

A rectangular film of liquid is extended from (4cm × 2 cm) to (5 cm × 4 cm). if the work done is 3 × 10^-4 J, the value of the surface tension of the liquid is

Three sound waves of equal amplitudes have frequencies (n – 1), n, (n + 1). They superimpose to give beats. The number of beats produced per second will be

A uniform magnetic field is restricted within a region of radius r. The magnetic field changes with time at a rate. Loop 1 of radius R > r encloses the region r and loop 2 of radius R is outside the region of magnetic field as shown in the figure below. Then the e. m. f generated is

On which of the following properties does the coagulating power of an ion depend?

Consider the following species:

CN⁺, CN^- , NO and CN

Which one of these will have the highest bond order?

The correction factor ‘a’ to the ideal gas equation corresponds to:

Among CaH₂,BeH₂, BaH₂,the order of ionic character is

Hydrocarbon (A) react with bromine by substitution to from an alkyl bromine which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms (A) is:

Functional megaspore in an angiosperm develops into:

Myelin sheath is produced by:

In Bougainvillea thorns are a modification of:

Which one of the following is related to ex-situ conservation of threatened animals and plants?

With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?

DNA fragments are:

A gene whose expression helps to identify transformed cell is known as a:

A dioecious flowering plant prevents both:

Identify the wrong statement in context of heartwood.

Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?